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#42
posted to rec.boats
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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. |
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#43
posted to rec.boats
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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. |
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#44
posted to rec.boats
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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. |
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#45
posted to rec.boats
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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. |
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#46
posted to rec.boats
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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. |
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#47
posted to rec.boats
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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. |
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#48
posted to rec.boats
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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. |
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#49
posted to rec.boats
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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. |
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#50
posted to rec.boats
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Transmission oil cooling
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Linear Mode
