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