sludge in Silver

["Andy Angove" <aa69tbird@xxxxxxx>]

This unfortunate situation brings a question to mind. What should a person
do with a car that has been sitting for many years? I was told to not use a
motor flush right away, as this would encourage chunks of sludge to break
away and possibly clog oil passages.

I was told it's best to use a good quality detergent oil, and change the oil
and filter frequently, until the oil stays clean for a longer period of
time, and to take it easy on the motor for awhile. What specifically should
those of us with cars that have sat for 10-15 years without being started do
once we revive them?

Thanks,
Andy

-----Original Message-----
From: mailing-list-owner@xxxxxxxxxxxxxxxx
[mailto:mailing-list-owner@xxxxxxxxxxxxxxxx]On Behalf Of
dardal@xxxxxxxxxxxxxxx
Sent: Friday, August 23, 2002 9:27 AM
To: mailing-list@xxxxxxxxxxxxxxxx
Subject: Re: IML: sludge in Silver

Mike, a piece of sludge could have been hanging out in the gallery for a
long
time.  Once you switched to Mobil 1, you were probably driving the car
harder,
and the 15w50 viscosity made the oil run hotter (generally, a good thing,
since
high oil temperature ironically resists sludge formation).  This combined to
your very bad luck could have moved the sludge to partly block an oil
passage.
Then, the oil pressure reading dropped, since the sensor is at the back of
the
cam.  Also, one or two cam bearings saw very low oil flow, ran too hot, and
most important, ran dry longer at startup.  This high cam friction
(especially
during startup) fatigued the cam.  The super high quality oil probably
helped
to postpone the final failure.

Its hard to tell for sure, but that's a good theory.  Yes, in retrospect you
should have installed the mechanical oil pressure gauge.  Its easy to say
that
now of course!

D^2