RE: Low oil pressure?

["Peter Berrevoets" <peterb@mysysltd.com>]

Sounds like it's right where it should be.  Cold engine with anything
10W/30/40/50 will read right up at the 5.0 BAR level.  When it warms up the
lighter weights 10W30 15W40 will drop to 3.5 - 4.0 BAR at idle and higher of
course when cruising. The heavier 20W50 seems to sit up around 5.0 BAR all
the time. Some listers, and I tend to agree, say that 20W50 should only be
used in the hottest of climates, I've found that 15W40 changed frequently
gives the best protection while reducing excessive drag on the moving parts.
When I first bought mine the PO must have been using 5W30 and the pressure
never went above the 3.5 BAR figure.  When I put in 20W50 and the gauge
jumped straight to 5.0 BAR I thought I was going to 'pop-a-gasket'!
Fortunately the QList put my mind to rest.

HTH

Peter Berrevoets
1990 200TQ 10V
Pearl on Black Leather
235K Km

BTW - I can't seem to say this enough - just replaced the injectors, plugs
(to Bosch Silvers) and fuel filter, and had the most impressive change in
character I've ever come across from performing routine maintenance.  The
fuel consumption went down from over 13 litres/100 km to just over 10
litres/100 km, cold cranking went from 7 or 8 seconds with a rough idle to
no more than 2 seconds with immediate smooth idle, hot starting improved
from 5 or 6 seconds to immediate, throttle response is crisp and linear,
power is better and smoother across the board with high rpm power smooth and
silky - no missing or hesitation.


> -----Original Message-----
> From: owner-quattro@audifans.com [mailto:owner-quattro@audifans.com]On
> Behalf Of Daniel Hussey
> Sent: Wednesday, May 05, 1999 1:23 AM
> To: quattro@audifans.com
> Subject: Low oil pressure?
>
>
>
>    Hey fellow listers,
>
>    I have a '90 200TQ with dual knock sensor motor.  Wondering
> what normal oil
> pressure is on this car.  I am presuming it is the notch right
> before the one
> that reads 5 bar.  So, like 3.75-4 bar is normal pressure under
> acceleration.
> My car's oil pressure used to sit there perfectly all the time.
> I just changed
> the oil to Castrol Syntec 10W30 and now my oil pressure seems
> lower than normal
> Not bad enough to cause major concern, but it is resting a little
> before that
> mark where it used to sit (before the one before the one reading
> 5 bar).  If
> you follow what I am saying, where should normal oil pressure be
> at in this
> car?  Sorry if I've caused any confusion.
>
>    Later,
>    Dan
>