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Re: Normal Oil Pressure

I have two data points for you:
1) My father's '82 Coupe.  Reads a fluctuating 1.5 - 2 bar at idle when hot,
   goes to 5 bar when revved.
2) My '85 Coupe GT.  Reads a fluctuating 2.5 - 3 bar at idle when really hot,
   3.5 - 4.5 bar when at nominal operating temp, and pegs the gauge when 
   revving.  When really pushing it (full throttle, up to 5K rpm or ss), it
   often will drop down to 3 bar or so (which makes sense).
BTW, I'm running Mobil-1 15W50 and my father is using Castol 40W.
Realize that new oil will hold a higher pressure than older oil, and straight
weight oil will hold a higher pressure than dual-weight.

I think your guage may be working fine, but reading higher pressure than
the oil is actually at.


Eric J. Fluhr                    gt6493c@prism.gatech.edu :: Georgia Tech!
Happy is the man who finds wisdom, and the man who gets understanding,
for the gain from it is better than gain from silver and its profit
better than gold...                                       Proverbs 2:13-14

//--- forwarded letter -------------------------------------------------------
> MIME-Version: 1.0
> Date: Thu, 05 Oct 95 08:39:46 -0500
> From: T_BROWN@nise-p.nosc.mil
> To: quattro@coimbra.ans.net
> Subject: Normal Oil Pressure

>         Does anyone know what is considered normal oil pressure in a 5 
>      cylinder Audi?.  My 86 Coupe GT reads 4.5 to 5 bar at idle.  Any RPM 
>      above idle pegs the gauge.  I never thought too much about it since 
>      the gauge has read this way since the day I drove it out of the 
>      showroom.  A friend of mine is having her Firebird "fixed" because of 
>      the same indication and now it has me wondering.  Is a pegged oil 
>      pressure gauge normal in Audis??  I'm sure I don't have an oil 
>      pressure problem, at least not one that has continued for the last 10 
>      years.
>                                                         Tom Brown