Pingin'

[Clarence L.Snyder]

Greg Hermann wrote:
> 
> >With coming into a '85 turbo EXP (w/ a turbo leaking oil into the intake side)
> >the car had EXTREMELY bad detonation.  When I repaired the turbo (stopped the
> >oil leak) the detonation went away (and all that blue smoke :) ).  I've heard
> >that oil in the air/fuel mixture causes detonation and I'd like to know why?
> >Any intelligent answers out there??
> >
> >Thanks....
> 
> Motor oil is generally pretty low octane stuff, and also high cetane,
> whichever way you care to talk about it. It is an effective, if not good
> diesel fuel, it likes to auto-ignite. A motor oil leak into the turbo
> compressor on a (some are turbocharged) GMC two stroke diesel can cause it
> to overspeed to destruction---
> 
> Regards, Greg
As will a holed piston on ANY diesel without an air throttle.