94 z28 A4

I havent owned the car but about 3 weeks.. ever since i have had it and even the previous owner told me the oil pressure reads high.. it reads at 80... all the time... should i worry about this? Oil level is right on and the oil is clean... also what brand of oil do you guys use and what weight oil?
Thanks!

02v8ta

iTrader: (8)

It doesn't move at all?
Use what ever has been in the engine or an old fashion conventional oil.

94 z28 A4

It'll move when i let out on the clutch from a dead stop and the rpms drop... like if its about to stall and the rpms drop to around 500 then itll move but as soon as i rev it it'll go back up and stay there... After it warms up at idle it'll drop down to about 75ish but still way close to 80... The guy i bought the car from said he used Castrol 10w 40 with a quart of Lucas... Do you think the 10w 40 and that Lucas is too thick? i've been wanting to switch it to 10w 30...

RamAir95TA

iTrader: (2)

Is there anything done to the car, i.e. high volume pump, high volume spring in the pump? Check the actual pressure with a manual pressure gauge to confirm that it isn't the sending unit or an electrical problem.

94 z28 A4

Nothing to my knowledge has been done... The guy did tell me that the guy he bought the car from replaced the 93 z28 lt1 motor with a 95 corvette lt1... which i know is the same motor... I even looked up an oil filter for a 93 z28 and a 95 corvette and they are different... the filter looks like the one for a 93 z28.. PLUS the motor doesnt have a MAF...

wysemunky

iTrader: (2)

93's didnt have MAF's, they were speed density cars and had quite a few quirks. I agree you need to check it with a manual gauge.

green96ta

iTrader: (11)

just like everyone else mentioned, put a manual gauge on it and check. Any time a oil pressure gauge isnt reading right is an alarm and should be troubleshot immediately. No matter if it reads high or low.