Just be cautious with adding oil to diesel fuel in
turbo-diesel engines as the higher energy content of the
added oil may increase your EGTs. As a previous poster
stated, one quart per 100 gallons would be a good ratio. It
will help with the lubricity for the high-pressure injection
pump, injectors and, to a small degree, the fuel-lift pump,
but that would be it, pretty much. It won't help with
top-cylinder lubrication because it's not spray injected
with the fuel into the cylinder during the intake cycle,
like a gasoline engine. Too much and you may also affect
the cetane rating and do damage to the top of your pistons
and cylinder walls (that is, for direct-injected diesels
versus pre-combustion chamber diesels).

Franko

"Meye5" wrote in message
ups.com...
Its all mostly snake oil sold by the same type of
charlatans who
invented and hocked slick 50 to all you putzes who bought
it. just a
bit of marvel mystery oil will lick any problem diesel may
have, it
even slicks your hair back nicely in a pinch.
Meye, friend to capt. neal and like
minded
fellows of the sea.