Transmission oil cooling
 

On 5/27/2014 3:44 PM, H*a*r*r*o*l*d wrote:
On 5/27/2014 3:08 PM, Mr. Luddite wrote:
On 5/27/2014 2:56 PM, Poquito Loco wrote:
On Tue, 27 May 2014 14:45:09 -0400, "Mr. Luddite"
wrote:

On 5/27/2014 2:19 PM, wrote:
On Sunday, May 25, 2014 3:04:31 PM UTC-4, Mr. Luddite wrote:
On 5/25/2014 8:25 AM, Poquito Loco wrote:

On Sat, 24 May 2014 18:13:59 -0400, "Mr. Luddite"
wrote:



On 5/24/2014 4:03 PM, Poquito Loco wrote:

I'm thinking of putting one of these on the Silverado. Anyone
had any experience with the concept of

increasing the oil supply to keep it cooler?



http://www.ebay.com/itm/PPE-Allison-Deep-Tranmission-Pan-Duramax-Allison-1000-2000-2400-Series-128051000/121345886743?_trksid=p2047675.c100011.m1850&_trkpa rms=aid%3D222008%26algo%3DSIC.MOTORS%26ao%3D1%26as c%3D22855%26meid%3D7132067336503725629%26pid%3D100 011%26prg%3D9833%26rk%3D1%26rkt%3D10%26sd%3D121335 643997









Followup to my last ...



I assume your Silverado has a transmission fluid temp gauge as
well as

an engine temp gauge. My Ford F-250 Super Duty does, I know. If
I were

noticing higher than normal transmission temps while towing I'd
be more

inclined to add an axillary transmission fluid cooler rather than
just

increase the capacity of the transmission pan.



If I am not mistaken your truck has the Allison transmission.
From what

I've heard, it is a superb transmission for towing ... probably
the best

thing GM has going for it in their trucks. Unless it's getting
hotter

than normal, I'd leave it alone. Just my humble opinion.





Here's an interesting and informative piece about Allison
transmissions. I'll probably just leave

mine alone for a while. I've never seen the temp get much over 200.



http://dmaxstore.com/index.php?main_page=product_info&cPath=16_363&prod ucts_id=668&zenid=2euu9fpbqf4tmumt6ecj7kbu74









The Pace Arrow Class A motorhome we had for a while had an Allison

transmission. It was the only thing I liked about the whole rig.



Ford sorta copied some of the operating characteristics of the
Allison

in the "TorqueShift" transmission used in the Super Duty Series. It

operates similarly to the Allison, including different gear ratios on

the downshifts than the upshifts.



One thing common to both that I assume you do ... always use the

"Tow/Haul" mode when towing. Otherwise, it *may* get hotter than
normal.

I'm having a little trouble with "different gear ratios" going down
verses going up. There's only one collection of planetary gear sets
in an automatic. The ratios don't change.



I think I screwed that up. It's not different gear ratios, but rather
different shift pressures (when using the tow/haul mode). For
example,
like the Allison, the Ford Torqshift will sense when going downhill and
automatically downshift to apply engine braking on gas engines, saving
wear on the brakes. Doesn't apply to diesels, since a diesel has no
engine braking.


If I set the cruise control to 45 mph (for example) and am in tow/haul
mode, the transmission will
downshift using the engine to keep the speed there. If the cruise
control is not set, but I'm in
tow/haul mode, the transmission will sense my slowing down, with or
without the brake, and downshift
- if, for example, I'm approaching a red light.



The Ford Torqshift does the same in Tow/Haul. Only difference is that
with your rig being a diesel you don't get any engine braking when
going down hills like you will with a gas engine.

Modern diesel engines do have engine brakes.

http://www.ehow.com/about_6303585_di...ake-work_.html


"Jake" brakes have been around for a long time. The "Valve" type is
likely what GM is using on the Duramax. They are exhaust brakes as I
understand them. It's still not compression based engine braking as in
gas engines.

Transmission oil cooling
 

On Tue, 27 May 2014 15:33:38 -0400, "Mr. Luddite" wrote:

On 5/27/2014 3:20 PM, Poquito Loco wrote:
On Tue, 27 May 2014 15:08:46 -0400, "Mr. Luddite" wrote:

On 5/27/2014 2:56 PM, Poquito Loco wrote:
On Tue, 27 May 2014 14:45:09 -0400, "Mr. Luddite" wrote:

On 5/27/2014 2:19 PM, wrote:
On Sunday, May 25, 2014 3:04:31 PM UTC-4, Mr. Luddite wrote:
On 5/25/2014 8:25 AM, Poquito Loco wrote:

On Sat, 24 May 2014 18:13:59 -0400, "Mr. Luddite" wrote:



On 5/24/2014 4:03 PM, Poquito Loco wrote:

I'm thinking of putting one of these on the Silverado. Anyone had any experience with the concept of

increasing the oil supply to keep it cooler?



http://www.ebay.com/itm/PPE-Allison-Deep-Tranmission-Pan-Duramax-Allison-1000-2000-2400-Series-128051000/121345886743?_trksid=p2047675.c100011.m1850&_trkpa rms=aid%3D222008%26algo%3DSIC.MOTORS%26ao%3D1%26as c%3D22855%26meid%3D7132067336503725629%26pid%3D100 011%26prg%3D9833%26rk%3D1%26rkt%3D10%26sd%3D121335 643997







Followup to my last ...



I assume your Silverado has a transmission fluid temp gauge as well as

an engine temp gauge. My Ford F-250 Super Duty does, I know. If I were

noticing higher than normal transmission temps while towing I'd be more

inclined to add an axillary transmission fluid cooler rather than just

increase the capacity of the transmission pan.



If I am not mistaken your truck has the Allison transmission. From what

I've heard, it is a superb transmission for towing ... probably the best

thing GM has going for it in their trucks. Unless it's getting hotter

than normal, I'd leave it alone. Just my humble opinion.





Here's an interesting and informative piece about Allison transmissions. I'll probably just leave

mine alone for a while. I've never seen the temp get much over 200.



http://dmaxstore.com/index.php?main_page=product_info&cPath=16_363&prod ucts_id=668&zenid=2euu9fpbqf4tmumt6ecj7kbu74







The Pace Arrow Class A motorhome we had for a while had an Allison

transmission. It was the only thing I liked about the whole rig.



Ford sorta copied some of the operating characteristics of the Allison

in the "TorqueShift" transmission used in the Super Duty Series. It

operates similarly to the Allison, including different gear ratios on

the downshifts than the upshifts.



One thing common to both that I assume you do ... always use the

"Tow/Haul" mode when towing. Otherwise, it *may* get hotter than normal.

I'm having a little trouble with "different gear ratios" going down verses going up. There's only one collection of planetary gear sets in an automatic. The ratios don't change.



I think I screwed that up. It's not different gear ratios, but rather
different shift pressures (when using the tow/haul mode). For example,
like the Allison, the Ford Torqshift will sense when going downhill and
automatically downshift to apply engine braking on gas engines, saving
wear on the brakes. Doesn't apply to diesels, since a diesel has no
engine braking.


If I set the cruise control to 45 mph (for example) and am in tow/haul mode, the transmission will
downshift using the engine to keep the speed there. If the cruise control is not set, but I'm in
tow/haul mode, the transmission will sense my slowing down, with or without the brake, and downshift
- if, for example, I'm approaching a red light.



The Ford Torqshift does the same in Tow/Haul. Only difference is that
with your rig being a diesel you don't get any engine braking when
going down hills like you will with a gas engine.

Perhaps not the same amount, but plenty enough to feel.

"TOW/HAUL MODE
An innovative tow/haul mode gives automatic transmissions on select models a dual-mode shift
program. This feature raises upshift points to use more of the engine’s power for strong
acceleration and raises downshift points to help slow the truck using engine braking."

From http://www.gmc.com/trailering-towing/glossary.html



I don't think the "select models" includes diesels. By their design a
diesel engine does not provide "engine braking". However:

You probably have GM's “SMART” exhaust brake. According to the same
website link you provided:

"The new diesel exhaust brake is an innovative standard feature for
DURAMAX models. Unlike the traditional “on/off” diesel exhaust brakes,
the driver-selectable “smart” brake varies negative torque needed, based
on the truckload and grade. This helps reduce brake fade, extends brake
life, and gives drivers plenty of confidence when hauling heavy loads
downhill."


Perhaps that's what it is. The transmission downshifts, engine RPM bounces up, and the truck slows
down.

Transmission oil cooling
 

On Tue, 27 May 2014 15:44:45 -0400, H*a*r*r*o*l*d wrote:

On 5/27/2014 3:08 PM, Mr. Luddite wrote:
On 5/27/2014 2:56 PM, Poquito Loco wrote:
On Tue, 27 May 2014 14:45:09 -0400, "Mr. Luddite"
wrote:

On 5/27/2014 2:19 PM, wrote:
On Sunday, May 25, 2014 3:04:31 PM UTC-4, Mr. Luddite wrote:
On 5/25/2014 8:25 AM, Poquito Loco wrote:

On Sat, 24 May 2014 18:13:59 -0400, "Mr. Luddite"
wrote:



On 5/24/2014 4:03 PM, Poquito Loco wrote:

I'm thinking of putting one of these on the Silverado. Anyone
had any experience with the concept of

increasing the oil supply to keep it cooler?



http://www.ebay.com/itm/PPE-Allison-Deep-Tranmission-Pan-Duramax-Allison-1000-2000-2400-Series-128051000/121345886743?_trksid=p2047675.c100011.m1850&_trkpa rms=aid%3D222008%26algo%3DSIC.MOTORS%26ao%3D1%26as c%3D22855%26meid%3D7132067336503725629%26pid%3D100 011%26prg%3D9833%26rk%3D1%26rkt%3D10%26sd%3D121335 643997








Followup to my last ...



I assume your Silverado has a transmission fluid temp gauge as
well as

an engine temp gauge. My Ford F-250 Super Duty does, I know. If
I were

noticing higher than normal transmission temps while towing I'd
be more

inclined to add an axillary transmission fluid cooler rather than
just

increase the capacity of the transmission pan.



If I am not mistaken your truck has the Allison transmission.
From what

I've heard, it is a superb transmission for towing ... probably
the best

thing GM has going for it in their trucks. Unless it's getting
hotter

than normal, I'd leave it alone. Just my humble opinion.





Here's an interesting and informative piece about Allison
transmissions. I'll probably just leave

mine alone for a while. I've never seen the temp get much over 200.



http://dmaxstore.com/index.php?main_page=product_info&cPath=16_363&prod ucts_id=668&zenid=2euu9fpbqf4tmumt6ecj7kbu74








The Pace Arrow Class A motorhome we had for a while had an Allison

transmission. It was the only thing I liked about the whole rig.



Ford sorta copied some of the operating characteristics of the Allison

in the "TorqueShift" transmission used in the Super Duty Series. It

operates similarly to the Allison, including different gear ratios on

the downshifts than the upshifts.



One thing common to both that I assume you do ... always use the

"Tow/Haul" mode when towing. Otherwise, it *may* get hotter than
normal.

I'm having a little trouble with "different gear ratios" going down
verses going up. There's only one collection of planetary gear sets
in an automatic. The ratios don't change.



I think I screwed that up. It's not different gear ratios, but rather
different shift pressures (when using the tow/haul mode). For example,
like the Allison, the Ford Torqshift will sense when going downhill and
automatically downshift to apply engine braking on gas engines, saving
wear on the brakes. Doesn't apply to diesels, since a diesel has no
engine braking.


If I set the cruise control to 45 mph (for example) and am in tow/haul
mode, the transmission will
downshift using the engine to keep the speed there. If the cruise
control is not set, but I'm in
tow/haul mode, the transmission will sense my slowing down, with or
without the brake, and downshift
- if, for example, I'm approaching a red light.



The Ford Torqshift does the same in Tow/Haul. Only difference is that
with your rig being a diesel you don't get any engine braking when
going down hills like you will with a gas engine.

Modern diesel engines do have engine brakes.

http://www.ehow.com/about_6303585_di...ake-work_.html

It sure feels like I'm getting engine braking when approaching a stop sign in tow/haul mode. If the
T/H button is not pressed, there is no braking - just like a regular automatic transmission.

Transmission oil cooling
 

On Tuesday, May 27, 2014 2:56:08 PM UTC-4, John H. wrote:
On Tue, 27 May 2014 14:45:09 -0400, "Mr. Luddite" wrote:



On 5/27/2014 2:19 PM, wrote:

On Sunday, May 25, 2014 3:04:31 PM UTC-4, Mr. Luddite wrote:

On 5/25/2014 8:25 AM, Poquito Loco wrote:



On Sat, 24 May 2014 18:13:59 -0400, "Mr. Luddite" wrote:







On 5/24/2014 4:03 PM, Poquito Loco wrote:



I'm thinking of putting one of these on the Silverado. Anyone had any experience with the concept of



increasing the oil supply to keep it cooler?







http://www.ebay.com/itm/PPE-Allison-Deep-Tranmission-Pan-Duramax-Allison-1000-2000-2400-Series-128051000/121345886743?_trksid=p2047675.c100011.m1850&_trkpa rms=aid%3D222008%26algo%3DSIC.MOTORS%26ao%3D1%26as c%3D22855%26meid%3D7132067336503725629%26pid%3D100 011%26prg%3D9833%26rk%3D1%26rkt%3D10%26sd%3D121335 643997















Followup to my last ...







I assume your Silverado has a transmission fluid temp gauge as well as



an engine temp gauge. My Ford F-250 Super Duty does, I know. If I were



noticing higher than normal transmission temps while towing I'd be more



inclined to add an axillary transmission fluid cooler rather than just



increase the capacity of the transmission pan.







If I am not mistaken your truck has the Allison transmission. From what



I've heard, it is a superb transmission for towing ... probably the best



thing GM has going for it in their trucks. Unless it's getting hotter



than normal, I'd leave it alone. Just my humble opinion.











Here's an interesting and informative piece about Allison transmissions. I'll probably just leave



mine alone for a while. I've never seen the temp get much over 200.







http://dmaxstore.com/index.php?main_page=product_info&cPath=16_363&prod ucts_id=668&zenid=2euu9fpbqf4tmumt6ecj7kbu74















The Pace Arrow Class A motorhome we had for a while had an Allison



transmission. It was the only thing I liked about the whole rig.







Ford sorta copied some of the operating characteristics of the Allison



in the "TorqueShift" transmission used in the Super Duty Series. It



operates similarly to the Allison, including different gear ratios on



the downshifts than the upshifts.







One thing common to both that I assume you do ... always use the



"Tow/Haul" mode when towing. Otherwise, it *may* get hotter than normal.



I'm having a little trouble with "different gear ratios" going down verses going up. There's only one collection of planetary gear sets in an automatic. The ratios don't change.







I think I screwed that up. It's not different gear ratios, but rather

different shift pressures (when using the tow/haul mode). For example,

like the Allison, the Ford Torqshift will sense when going downhill and

automatically downshift to apply engine braking on gas engines, saving

wear on the brakes. Doesn't apply to diesels, since a diesel has no

engine braking.





If I set the cruise control to 45 mph (for example) and am in tow/haul mode, the transmission will

downshift using the engine to keep the speed there. If the cruise control is not set, but I'm in

tow/haul mode, the transmission will sense my slowing down, with or without the brake, and downshift

- if, for example, I'm approaching a red light.

I had a tacoma that would do that, it recognized I was braking and downshifted.

Transmission oil cooling
 

On 5/27/2014 4:18 PM, Mr. Luddite wrote:
On 5/27/2014 3:44 PM, H*a*r*r*o*l*d wrote:
On 5/27/2014 3:08 PM, Mr. Luddite wrote:
On 5/27/2014 2:56 PM, Poquito Loco wrote:
On Tue, 27 May 2014 14:45:09 -0400, "Mr. Luddite"
wrote:

On 5/27/2014 2:19 PM, wrote:
On Sunday, May 25, 2014 3:04:31 PM UTC-4, Mr. Luddite wrote:
On 5/25/2014 8:25 AM, Poquito Loco wrote:

On Sat, 24 May 2014 18:13:59 -0400, "Mr. Luddite"
wrote:



On 5/24/2014 4:03 PM, Poquito Loco wrote:

I'm thinking of putting one of these on the Silverado. Anyone
had any experience with the concept of

increasing the oil supply to keep it cooler?



http://www.ebay.com/itm/PPE-Allison-Deep-Tranmission-Pan-Duramax-Allison-1000-2000-2400-Series-128051000/121345886743?_trksid=p2047675.c100011.m1850&_trkpa rms=aid%3D222008%26algo%3DSIC.MOTORS%26ao%3D1%26as c%3D22855%26meid%3D7132067336503725629%26pid%3D100 011%26prg%3D9833%26rk%3D1%26rkt%3D10%26sd%3D121335 643997










Followup to my last ...



I assume your Silverado has a transmission fluid temp gauge as
well as

an engine temp gauge. My Ford F-250 Super Duty does, I know. If
I were

noticing higher than normal transmission temps while towing I'd
be more

inclined to add an axillary transmission fluid cooler rather than
just

increase the capacity of the transmission pan.



If I am not mistaken your truck has the Allison transmission.
From what

I've heard, it is a superb transmission for towing ... probably
the best

thing GM has going for it in their trucks. Unless it's getting
hotter

than normal, I'd leave it alone. Just my humble opinion.





Here's an interesting and informative piece about Allison
transmissions. I'll probably just leave

mine alone for a while. I've never seen the temp get much over 200.



http://dmaxstore.com/index.php?main_page=product_info&cPath=16_363&prod ucts_id=668&zenid=2euu9fpbqf4tmumt6ecj7kbu74










The Pace Arrow Class A motorhome we had for a while had an Allison

transmission. It was the only thing I liked about the whole rig.



Ford sorta copied some of the operating characteristics of the
Allison

in the "TorqueShift" transmission used in the Super Duty
Series. It

operates similarly to the Allison, including different gear
ratios on

the downshifts than the upshifts.



One thing common to both that I assume you do ... always use the

"Tow/Haul" mode when towing. Otherwise, it *may* get hotter than
normal.

I'm having a little trouble with "different gear ratios" going down
verses going up. There's only one collection of planetary gear sets
in an automatic. The ratios don't change.



I think I screwed that up. It's not different gear ratios, but
rather
different shift pressures (when using the tow/haul mode). For
example,
like the Allison, the Ford Torqshift will sense when going downhill
and
automatically downshift to apply engine braking on gas engines, saving
wear on the brakes. Doesn't apply to diesels, since a diesel has no
engine braking.


If I set the cruise control to 45 mph (for example) and am in tow/haul
mode, the transmission will
downshift using the engine to keep the speed there. If the cruise
control is not set, but I'm in
tow/haul mode, the transmission will sense my slowing down, with or
without the brake, and downshift
- if, for example, I'm approaching a red light.



The Ford Torqshift does the same in Tow/Haul. Only difference is that
with your rig being a diesel you don't get any engine braking when
going down hills like you will with a gas engine.

Modern diesel engines do have engine brakes.

http://www.ehow.com/about_6303585_di...ake-work_.html


"Jake" brakes have been around for a long time. The "Valve" type is
likely what GM is using on the Duramax. They are exhaust brakes as I
understand them. It's still not compression based engine braking as in
gas engines.

I think the article said the system uses *vacuum* by means of opening
the valves at different times. It's not am exhaust brake.

Transmission oil cooling
 

On Tue, 27 May 2014 16:18:14 -0400, "Mr. Luddite" wrote:

On 5/27/2014 3:44 PM, H*a*r*r*o*l*d wrote:
On 5/27/2014 3:08 PM, Mr. Luddite wrote:
On 5/27/2014 2:56 PM, Poquito Loco wrote:
On Tue, 27 May 2014 14:45:09 -0400, "Mr. Luddite"
wrote:

On 5/27/2014 2:19 PM, wrote:
On Sunday, May 25, 2014 3:04:31 PM UTC-4, Mr. Luddite wrote:
On 5/25/2014 8:25 AM, Poquito Loco wrote:

On Sat, 24 May 2014 18:13:59 -0400, "Mr. Luddite"
wrote:



On 5/24/2014 4:03 PM, Poquito Loco wrote:

I'm thinking of putting one of these on the Silverado. Anyone
had any experience with the concept of

increasing the oil supply to keep it cooler?



http://www.ebay.com/itm/PPE-Allison-Deep-Tranmission-Pan-Duramax-Allison-1000-2000-2400-Series-128051000/121345886743?_trksid=p2047675.c100011.m1850&_trkpa rms=aid%3D222008%26algo%3DSIC.MOTORS%26ao%3D1%26as c%3D22855%26meid%3D7132067336503725629%26pid%3D100 011%26prg%3D9833%26rk%3D1%26rkt%3D10%26sd%3D121335 643997









Followup to my last ...



I assume your Silverado has a transmission fluid temp gauge as
well as

an engine temp gauge. My Ford F-250 Super Duty does, I know. If
I were

noticing higher than normal transmission temps while towing I'd
be more

inclined to add an axillary transmission fluid cooler rather than
just

increase the capacity of the transmission pan.



If I am not mistaken your truck has the Allison transmission.
From what

I've heard, it is a superb transmission for towing ... probably
the best

thing GM has going for it in their trucks. Unless it's getting
hotter

than normal, I'd leave it alone. Just my humble opinion.





Here's an interesting and informative piece about Allison
transmissions. I'll probably just leave

mine alone for a while. I've never seen the temp get much over 200.



http://dmaxstore.com/index.php?main_page=product_info&cPath=16_363&prod ucts_id=668&zenid=2euu9fpbqf4tmumt6ecj7kbu74









The Pace Arrow Class A motorhome we had for a while had an Allison

transmission. It was the only thing I liked about the whole rig.



Ford sorta copied some of the operating characteristics of the
Allison

in the "TorqueShift" transmission used in the Super Duty Series. It

operates similarly to the Allison, including different gear ratios on

the downshifts than the upshifts.



One thing common to both that I assume you do ... always use the

"Tow/Haul" mode when towing. Otherwise, it *may* get hotter than
normal.

I'm having a little trouble with "different gear ratios" going down
verses going up. There's only one collection of planetary gear sets
in an automatic. The ratios don't change.



I think I screwed that up. It's not different gear ratios, but rather
different shift pressures (when using the tow/haul mode). For
example,
like the Allison, the Ford Torqshift will sense when going downhill and
automatically downshift to apply engine braking on gas engines, saving
wear on the brakes. Doesn't apply to diesels, since a diesel has no
engine braking.


If I set the cruise control to 45 mph (for example) and am in tow/haul
mode, the transmission will
downshift using the engine to keep the speed there. If the cruise
control is not set, but I'm in
tow/haul mode, the transmission will sense my slowing down, with or
without the brake, and downshift
- if, for example, I'm approaching a red light.



The Ford Torqshift does the same in Tow/Haul. Only difference is that
with your rig being a diesel you don't get any engine braking when
going down hills like you will with a gas engine.

Modern diesel engines do have engine brakes.

http://www.ehow.com/about_6303585_di...ake-work_.html


"Jake" brakes have been around for a long time. The "Valve" type is
likely what GM is using on the Duramax. They are exhaust brakes as I
understand them. It's still not compression based engine braking as in
gas engines.

So we can agree. I don't have compression based engine braking as in gas engines. I do have engine
exhaust braking as in diesel engines.

Works for me.

Transmission oil cooling
 

"Mr. Luddite" wrote:
On 5/27/2014 3:20 PM, Poquito Loco wrote:
On Tue, 27 May 2014 15:08:46 -0400, "Mr. Luddite" wrote:

On 5/27/2014 2:56 PM, Poquito Loco wrote:
On Tue, 27 May 2014 14:45:09 -0400, "Mr. Luddite" wrote:

On 5/27/2014 2:19 PM, wrote:
On Sunday, May 25, 2014 3:04:31 PM UTC-4, Mr. Luddite wrote:
On 5/25/2014 8:25 AM, Poquito Loco wrote:

On Sat, 24 May 2014 18:13:59 -0400, "Mr. Luddite" wrote:



On 5/24/2014 4:03 PM, Poquito Loco wrote:

I'm thinking of putting one of these on the Silverado. Anyone
had any experience with the concept of

increasing the oil supply to keep it cooler?



http://www.ebay.com/itm/PPE-Allison-Deep-Tranmission-Pan-Duramax-Allison-1000-2000-2400-Series-128051000/121345886743?_trksid=p2047675.c100011.m1850&_trkpa rms=aid%3D222008%26algo%3DSIC.MOTORS%26ao%3D1%26as c%3D22855%26meid%3D7132067336503725629%26pid%3D100 011%26prg%3D9833%26rk%3D1%26rkt%3D10%26sd%3D121335 643997







Followup to my last ...



I assume your Silverado has a transmission fluid temp gauge as well as

an engine temp gauge. My Ford F-250 Super Duty does, I know. If I were

noticing higher than normal transmission temps while towing I'd be more

inclined to add an axillary transmission fluid cooler rather than just

increase the capacity of the transmission pan.



If I am not mistaken your truck has the Allison transmission. From what

I've heard, it is a superb transmission for towing ... probably the best

thing GM has going for it in their trucks. Unless it's getting hotter

than normal, I'd leave it alone. Just my humble opinion.





Here's an interesting and informative piece about Allison
transmissions. I'll probably just leave

mine alone for a while. I've never seen the temp get much over 200.



http://dmaxstore.com/index.php?main_page=product_info&cPath=16_363&prod ucts_id=668&zenid=2euu9fpbqf4tmumt6ecj7kbu74







The Pace Arrow Class A motorhome we had for a while had an Allison

transmission. It was the only thing I liked about the whole rig.



Ford sorta copied some of the operating characteristics of the Allison

in the "TorqueShift" transmission used in the Super Duty Series. It

operates similarly to the Allison, including different gear ratios on

the downshifts than the upshifts.



One thing common to both that I assume you do ... always use the

"Tow/Haul" mode when towing. Otherwise, it *may* get hotter than normal.

I'm having a little trouble with "different gear ratios" going down
verses going up. There's only one collection of planetary gear sets
in an automatic. The ratios don't change.



I think I screwed that up. It's not different gear ratios, but rather
different shift pressures (when using the tow/haul mode). For example,
like the Allison, the Ford Torqshift will sense when going downhill and
automatically downshift to apply engine braking on gas engines, saving
wear on the brakes. Doesn't apply to diesels, since a diesel has no
engine braking.


If I set the cruise control to 45 mph (for example) and am in tow/haul
mode, the transmission will
downshift using the engine to keep the speed there. If the cruise
control is not set, but I'm in
tow/haul mode, the transmission will sense my slowing down, with or
without the brake, and downshift
- if, for example, I'm approaching a red light.



The Ford Torqshift does the same in Tow/Haul. Only difference is that
with your rig being a diesel you don't get any engine braking when
going down hills like you will with a gas engine.

Perhaps not the same amount, but plenty enough to feel.

"TOW/HAUL MODE
An innovative tow/haul mode gives automatic transmissions on select
models a dual-mode shift
program. This feature raises upshift points to use more of the engine’s power for strong
acceleration and raises downshift points to help slow the truck using engine braking."

From http://www.gmc.com/trailering-towing/glossary.html



I don't think the "select models" includes diesels. By their design a
diesel engine does not provide "engine braking". However:

You probably have GM's “SMART� exhaust brake. According to the same
website link you provided:

"The new diesel exhaust brake is an innovative standard feature for
DURAMAX models. Unlike the traditional “on/off� diesel exhaust brakes, the
driver-selectable “smart� brake varies negative torque needed, based on
the truckload and grade. This helps reduce brake fade, extends brake
life, and gives drivers plenty of confidence when hauling heavy loads downhill."

Actually diesels do engine brake, but with changing valve timing. Or
restricting exhaust maybe on a duramax. Jake or Jakob Brake is the engine
braking on older diesels.

Transmission oil cooling
 

On Tuesday, May 27, 2014 5:09:22 PM UTC-4, John H. wrote:
On Tue, 27 May 2014 16:18:14 -0400, "Mr. Luddite" wrote:



On 5/27/2014 3:44 PM, H*a*r*r*o*l*d wrote:

On 5/27/2014 3:08 PM, Mr. Luddite wrote:

On 5/27/2014 2:56 PM, Poquito Loco wrote:

On Tue, 27 May 2014 14:45:09 -0400, "Mr. Luddite"

wrote:



On 5/27/2014 2:19 PM, wrote:

On Sunday, May 25, 2014 3:04:31 PM UTC-4, Mr. Luddite wrote:

On 5/25/2014 8:25 AM, Poquito Loco wrote:



On Sat, 24 May 2014 18:13:59 -0400, "Mr. Luddite"

wrote:







On 5/24/2014 4:03 PM, Poquito Loco wrote:



I'm thinking of putting one of these on the Silverado. Anyone

had any experience with the concept of



increasing the oil supply to keep it cooler?







http://www.ebay.com/itm/PPE-Allison-Deep-Tranmission-Pan-Duramax-Allison-1000-2000-2400-Series-128051000/121345886743?_trksid=p2047675..c100011.m1850&_trkp arms=aid%3D222008%26algo%3DSIC.MOTORS%26ao%3D1%26a sc%3D22855%26meid%3D7132067336503725629%26pid%3D10 0011%26prg%3D9833%26rk%3D1%26rkt%3D10%26sd%3D12133 5643997



















Followup to my last ...







I assume your Silverado has a transmission fluid temp gauge as

well as



an engine temp gauge. My Ford F-250 Super Duty does, I know. If

I were



noticing higher than normal transmission temps while towing I'd

be more



inclined to add an axillary transmission fluid cooler rather than

just



increase the capacity of the transmission pan.







If I am not mistaken your truck has the Allison transmission.

From what



I've heard, it is a superb transmission for towing ... probably

the best



thing GM has going for it in their trucks. Unless it's getting

hotter



than normal, I'd leave it alone. Just my humble opinion.











Here's an interesting and informative piece about Allison

transmissions. I'll probably just leave



mine alone for a while. I've never seen the temp get much over 200.

Transmission oil cooling
 

On Thursday, May 29, 2014 5:21:24 PM UTC-4, wrote:


John : Get the Transmission cooler. It's worth the time, and money. DON'T use the Rad Tank as a cooler. Transmissions run FAR better and last MUCH longer when they run COOL. Anyone saying different, doesn't know his ass from his elbow. My statement comes from several Transmission rebuilders, as well as a Friend who has the record for the fastest 400 Turbomatic in Ontario, Canada. Luddite is wrong, don't listen to it.

Transmission oil cooling
 

On 5/30/2014 1:10 AM, wrote:
On Thursday, May 29, 2014 5:21:24 PM UTC-4, wrote:


John : Get the Transmission cooler. It's worth the time, and money. DON'T use the Rad Tank as a cooler.

Transmissions run FAR better and last MUCH longer when they run COOL.
Anyone saying different, doesn't know

his ass from his elbow. My statement comes from several Transmission
rebuilders, as well as a Friend who has

the record for the fastest 400 Turbomatic in Ontario, Canada. Luddite is
wrong, don't listen to it.



It's too bad you totally missed the subject of this conversation
although it doesn't surprise me.

John was not asking about transmission coolers.

He was asking about an aftermarket transmission pan that holds
additional fluid. The concept being that more fluid equates to lower
transmission temperatures.

Tests have not proven this to be true. All the bigger pan with more
fluid does is increase the time to get up to temp slightly and increase
the time to cool back down.

Everyone here, including me, recommended an auxiliary transmission
cooler, especially for towing. Turns out John's truck *has* one that
was factory installed.

Go practice your bass.

Transmission oil cooling
 

SNERK......that Dickson is always a dollar short and a day late.

About 10 years ago when I was planning to drive my 95 Plymouth Voyager mini van up to Quebec to buy my Sandpiper 565 sailboat, I had a transmission cooler installed because of the dubious reputation of Chrysler transmissions at that time.
Brother in law offered me use of his Dodge Ram pickup so I took advantage of that.
Seems to me that the RAV4 came with some kind of cooler and I had no problem towing 33 percent above it's rated capacity....well maybe climbing long hills where my speed would drop 20 mph below posted speed.

I would look into a cooler for the Highlander if I upgraded to a heavier boat upwards of 3000 towing weight even though it's rated for 5000 lbs.
Better safe than sorry.

Transmission oil cooling
 

On 5/30/14, 7:31 AM, True North wrote:
SNERK......that Dickson is always a dollar short and a day late.

About 10 years ago when I was planning to drive my 95 Plymouth Voyager mini van up to Quebec to buy my Sandpiper 565 sailboat, I had a transmission cooler installed because of the dubious reputation of Chrysler transmissions at that time.
Brother in law offered me use of his Dodge Ram pickup so I took advantage of that.
Seems to me that the RAV4 came with some kind of cooler and I had no problem towing 33 percent above it's rated capacity....well maybe climbing long hills where my speed would drop 20 mph below posted speed.

I would look into a cooler for the Highlander if I upgraded to a heavier boat upwards of 3000 towing weight even though it's rated for 5000 lbs.
Better safe than sorry.



It's not just the weight, it's also the cube. If you are pulling a big
boxy structure, the air resistance will also have an impact on the
amount of stress and heat buildup on the transmission.

--
If right-wing assholes could fly,
rec.boats would be an airport!

Transmission oil cooling
 

On 5/30/2014 7:31 AM, True North wrote:
SNERK......that Dickson is always a dollar short and a day late.

About 10 years ago when I was planning to drive my 95 Plymouth Voyager mini van up to Quebec to buy my Sandpiper 565 sailboat, I had a transmission cooler installed because of the dubious reputation of Chrysler transmissions at that time.
Brother in law offered me use of his Dodge Ram pickup so I took advantage of that.
Seems to me that the RAV4 came with some kind of cooler and I had no problem towing 33 percent above it's rated capacity....well maybe climbing long hills where my speed would drop 20 mph below posted speed.

I would look into a cooler for the Highlander if I upgraded to a heavier boat upwards of 3000 towing weight even though it's rated for 5000 lbs.
Better safe than sorry.



When Freud developed the concepts of modern psychoanalysis he had people
like Scott Dickson in mind.

Transmission oil cooling
 

On 5/30/2014 7:31 AM, True North wrote:
Better safe than sorry.
Your new motto?

Transmission oil cooling
 

On 5/30/2014 7:49 AM, F*O*A*D wrote:
On 5/30/14, 7:31 AM, True North wrote:
SNERK......that Dickson is always a dollar short and a day late.

About 10 years ago when I was planning to drive my 95 Plymouth Voyager
mini van up to Quebec to buy my Sandpiper 565 sailboat, I had a
transmission cooler installed because of the dubious reputation of
Chrysler transmissions at that time.
Brother in law offered me use of his Dodge Ram pickup so I took
advantage of that.
Seems to me that the RAV4 came with some kind of cooler and I had no
problem towing 33 percent above it's rated capacity....well maybe
climbing long hills where my speed would drop 20 mph below posted speed.

I would look into a cooler for the Highlander if I upgraded to a
heavier boat upwards of 3000 towing weight even though it's rated for
5000 lbs.
Better safe than sorry.



It's not just the weight, it's also the cube. If you are pulling a big
boxy structure, the air resistance will also have an impact on the
amount of stress and heat buildup on the transmission.


Obviously.

Transmission oil cooling
 

On Friday, May 30, 2014 6:53:40 AM UTC-4, Mr. Luddite wrote:
On 5/30/2014 1:10 AM, wrote:

On Thursday, May 29, 2014 5:21:24 PM UTC-4, wrote:





John : Get the Transmission cooler. It's worth the time, and money. DON'T use the Rad Tank as a cooler.



Transmissions run FAR better and last MUCH longer when they run COOL.

Anyone saying different, doesn't know



his ass from his elbow. My statement comes from several Transmission

rebuilders, as well as a Friend who has



the record for the fastest 400 Turbomatic in Ontario, Canada. Luddite is

wrong, don't listen to it.







It's too bad you totally missed the subject of this conversation

although it doesn't surprise me.



John was not asking about transmission coolers.



He was asking about an aftermarket transmission pan that holds

additional fluid. The concept being that more fluid equates to lower

transmission temperatures.



Tests have not proven this to be true. All the bigger pan with more

fluid does is increase the time to get up to temp slightly and increase

the time to cool back down.



Everyone here, including me, recommended an auxiliary transmission

cooler, especially for towing. Turns out John's truck *has* one that

was factory installed.



Go practice your bass.

**** YOU ASSCRACK. I guess it really bothers you that someone OTHER than your wrinkled ass, knows something.

YOU....also stated earlier in the thread that " after it warms up " your transmission works better. Well, its a Ford for one thing, and two : Trannys run better when COOL. Fords suck anyway, just like you.

****ing idiot.

Transmission oil cooling
 

On Friday, May 30, 2014 7:58:34 AM UTC-4, Mr. Luddite wrote:

When Freud developed the concepts of modern psychoanalysis he had people

like Scott Dickson in mind.

Just bugs you to ****, dont it, ****??

Transmission oil cooling
 

On 6/2/2014 12:29 AM, wrote:
On Friday, May 30, 2014 6:53:40 AM UTC-4, Mr. Luddite wrote:
On 5/30/2014 1:10 AM, wrote:

On Thursday, May 29, 2014 5:21:24 PM UTC-4, wrote:





John : Get the Transmission cooler. It's worth the time, and money. DON'T use the Rad Tank as a cooler.



Transmissions run FAR better and last MUCH longer when they run COOL.

Anyone saying different, doesn't know



his ass from his elbow. My statement comes from several Transmission

rebuilders, as well as a Friend who has



the record for the fastest 400 Turbomatic in Ontario, Canada. Luddite is

wrong, don't listen to it.







It's too bad you totally missed the subject of this conversation

although it doesn't surprise me.



John was not asking about transmission coolers.



He was asking about an aftermarket transmission pan that holds

additional fluid. The concept being that more fluid equates to lower

transmission temperatures.



Tests have not proven this to be true. All the bigger pan with more

fluid does is increase the time to get up to temp slightly and increase

the time to cool back down.



Everyone here, including me, recommended an auxiliary transmission

cooler, especially for towing. Turns out John's truck *has* one that

was factory installed.



Go practice your bass.

**** YOU ASSCRACK. I guess it really bothers you that someone OTHER than your wrinkled ass, knows something.

YOU....also stated earlier in the thread that " after it warms up " your transmission works better. Well, its a Ford for one thing, and two : Trannys run better when COOL. Fords suck anyway, just like you.

****ing idiot.



Right. Ever notice that your torque converter won't lock up on the
highway until the transmission fluid "warms up"? All of them are
designed that way ... GM, Dodge, Ford. Cool doesn't mean cold.

Back to the bin with you. Psychotics aren't worth conversing with.

Transmission oil cooling
 

On Monday, June 2, 2014 6:15:33 AM UTC-4, Mr. Luddite wrote:
On 6/2/2014 12:29 AM, wrote:

On Friday, May 30, 2014 6:53:40 AM UTC-4, Mr. Luddite wrote:

On 5/30/2014 1:10 AM, wrote:



On Thursday, May 29, 2014 5:21:24 PM UTC-4, wrote:











John : Get the Transmission cooler. It's worth the time, and money. DON'T use the Rad Tank as a cooler.







Transmissions run FAR better and last MUCH longer when they run COOL.



Anyone saying different, doesn't know







his ass from his elbow. My statement comes from several Transmission



rebuilders, as well as a Friend who has







the record for the fastest 400 Turbomatic in Ontario, Canada. Luddite is



wrong, don't listen to it.















It's too bad you totally missed the subject of this conversation



although it doesn't surprise me.







John was not asking about transmission coolers.







He was asking about an aftermarket transmission pan that holds



additional fluid. The concept being that more fluid equates to lower



transmission temperatures.







Tests have not proven this to be true. All the bigger pan with more



fluid does is increase the time to get up to temp slightly and increase



the time to cool back down.







Everyone here, including me, recommended an auxiliary transmission



cooler, especially for towing. Turns out John's truck *has* one that



was factory installed.







Go practice your bass.



**** YOU ASSCRACK. I guess it really bothers you that someone OTHER than your wrinkled ass, knows something.



YOU....also stated earlier in the thread that " after it warms up " your transmission works better. Well, its a Ford for one thing, and two : Trannys run better when COOL. Fords suck anyway, just like you.



****ing idiot.







Right. Ever notice that your torque converter won't lock up on the

highway until the transmission fluid "warms up"? All of them are

designed that way ... GM, Dodge, Ford. Cool doesn't mean cold.



Back to the bin with you. Psychotics aren't worth conversing with.

Too bad that a Transmission Mechanic told me that, but you ....you think that you can just bull**** your way through life. Now..**** OFF, put me in the Ignore bin, like I will with you, ****.

What a ****ing self-righteous asshole-cocksucker you are.

Transmission oil cooling
 

On Monday, June 2, 2014 6:15:33 AM UTC-4, Mr. Luddite wrote:

Right. Ever notice that your torque converter won't lock up on the

highway until the transmission fluid "warms up"? All of them are

designed that way ... GM, Dodge, Ford. Cool doesn't mean cold.

Back to the bin with you. Psychotics aren't worth conversing with



By the way, Mr Know-It-All....My transmission seems to work fine....when FREEZING cold, you dumbass.

By comparison, your Transmission DOESN'T work when too hot.

Clue in yet, DUMBASS?