oil problem

[TEX TERRY, II]

From: tombin <tombin at washington.corrupt.net>
(snip)
Hi, i have an audi 4000 (non-quattro).  when my car heats up, the oil
light comes and slowly the oil pressure goes way down (just around 1 bar).
there is also some blue smoke comming from the tail pipe.  Could this be a
vaulve seals problem?  or would it be in the block?
(snip)

When the temperature of the oil is raised, then the oil will thin out.  As
the oil gets thinner, the pressure gauge will show a decrease of oil
pressure.  If the coolant temperature is in good operating condition, then
use a heavier weight oil, than what you are presently using, to get better
control of the oil flow.  When the oil gets thinned out, then there is an
increased chance of having the thin oil bypass the rings, and get into the
combustion chamber.  This will produce an oil-type smoke out of the
exhaust, when the engine is running.  If the problem is just having bad
valve seals, then, after the engine is turned off, and sat for a while, the
oil will pass around the valve, and into the combustion chamber.  On
start-up, there will be a sign of this smoke, but after running for a
little bit, the smoke will dissappear, until after the next prolonged
period after shutdown.

Tex Terry, II
83 5kt sedan (non-quattro)
Franklion, PA  USA