Re: Time for an Oil Change, an opposite opinion

["Southerlin, Russell S" <russell.s.southerlin@lmco.com>]

on 5-14-98 Sarge wrote:
		If the car has always been run on regular oil, you might not
want to change to
		Mobil-1 or the like. Regular oil builds up deposits around
gaskets and seals
		and can cause the outside of the gasket to dry up and crack.
When the synth is
		added, it removes a lot of the icky dino-oil deposits and
can subsequently
		cause leaks around seals (if they've dried/cracked in the
interim). Maybe this
		will be a problem for you, maybe not. For me, it has been a
problem. synth oil
		is good if used from the start (or say 10k miles), but don't
switch to synth
		later in life. (that's my based on my experiences, YMMV).

I have experienced just the opposite with switching to Synth. on high
mileage cars.  Over the last 5 years I have switched about 6 cars to Synth.
oil and have had not one of them give me problems related to leaks sludge
release etc.  They ranged in mileage from about 80K to 130K when the change
over was made.  Two were Audis (84 4KQ and 87 5KQ) the rest were american
makes.  I have used both Castrol Syntec and Mobil 1.  Just thought I would
give another point of view.

Russ
87 5KCSTQ
Litttleton, CO