Bil wrote in news:1179801332.742087.12070
@x35g2000prf.googlegroups.com:

Changing the oil too frequently prevents the additives doing what they
were designed to do. Of course, changing the oil frequently boosts oil
corporation profits. And if you're holding stock in Big Oil, that's
not a bad thing either.



What you say is true of a gasoline engine. But, in any diesel situation,
the big oil destroyer is carbon from all the blowby of the insanely
pressurized combustion caused by the 22:1 compression ratio and that
knocking explosion blowing it by even good rings.

The oil turns to carbon in a short time. Just pull the dipstick after an
hour of runtime and wipe it on your best shirt. It'll remind you to
change it OFTEN....not wait for amazing modern additives, now embedded in
lamp black, to coat the bearings. They can't even SEE the bearings!...
(c;

Larry
--
Grade School Physics Factoid:
A building cannot freefall into its own footprint without
skilled demolition.