Bill,

I'm not sure I understand your question.

But, all diesel fuel injection systems are mechanical. They are also
hydraulic. New systems use digitial electronics to more perfectly control
the hydraulic/mechanical action to more perfectly inject the precise
quantity of fuel required at the precise time it is required. This serves
to more completely burn the fuel and to eliminate the unburned hydrocarbons
so problematic with older poorly maintained systems. The byproduct of these
improved systems is vastly improved fuel economy and improved longevity of
engine upper deck components.

I continue to advocate recycling used diesel engine lube oil as fuel.

YMMV.

Butch
"Bill McKee" wrote in message
nk.net...
But weren't these mostly mechanical fuel injection?

"Butch Davis" wrote in message
ink.net...
Lots of opinions with little in the way of facts.

The practice of burning used diesel engine crankcase oil as fuel has been
popular with fleet users for many years. The main caution is that the
oil must not have been contaminated by coolant. The practice will not
void the warranties of any of the major engine manufacturers. The lube
oil is burned completely and, BTW, has a higher BTU content than fuel
oil.

The process should be done carefully in order not to "over oil" the fuel.
Racor, the filter manufacturer, used to sell a system for the purpose. I
bought several for a fleet of large EMD, Cummins, and CAT generators.
The systems made us a lot of money by saving the cost of disposal of used
lube oil and avoiding the cost of thousands of gallons of fuel oil. The
Racor kits were in several sizes to accomodate small to large
applications. I don't know if Racor continues to market the systems.

Butch
wrote in message
oups.com...

Tamaroak wrote:
I recently read something about adding the used oil from your crankcase
(20 quarts from my engine) to your diesel tanks to burn up, thus saving
the purchase of five gallons of fuel and eliminating the problem of
disposal.

I would be diluting it into 320 gallons of fuel.

Is this common?

Capt. Jeff

Wouldn't have been a problem in older diesels, but I wouldn't do it
with the new high output types, with high pressure fuel delivery, etc