Re: Low oil pressure?

[Michael Murphy <mmurphy@nais.com>]

Daniel Hussey wrote:
> 
>    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.

Dan,
Your oil pressure seems normal (from what I know).  However, 10w30 -
according to the I5 oil specs I have - is acceptable weight when outside 
temp range is 0-60F.  15w50 or 20w50 are the proper multiweights to use
for most spring/summer/fall temp ranges.  I found 10w30 (Mobil 1) did
the same in my 89 100 (slightly lower pressure and temp).
HTH,
MJ Murphy