[bayrat]

Hello to all I have a 1989 toyota supra non turbo that runs very well idles as it should but it seems to run warmer than usual.

The oil pressure seems low after warm up. it starts out at about 50lbs
then slowly goes down over a period of about 30 -40 miles to about 10-15 lbs this is on the stock gauge.

I can drive it to work about 60 miles the temp does not get high this is freeway driving @ 70 degrees I believe if I was to drive it in city traffic it would overheat. it has 99k on it I do not drive it often.

I have heard the fan run
The oil looks good.

I am hoping this is not a head gasket problem.

On a older chevy I had a oil bypass valve where the oil filter bolted to stick open causing low oil pressure.

The inside of the care seems harder to defrost than it should be the heater blows hot air but there may be more moisture than other cars I have.

Is there any inherent problems with these motors.
Like oil pump ,head gasket over heating.

If you were to drive this car 30 minutes to work and back in normal conditions you might not even know there was a problem.

I also had a problem with a head gasket on a ford motor where the oil looked fine but it was going into the coolant side causing overheating.

Any suggestions on where to start and look would be greatly appreciated.

The car is spotless But I would hate to pay to put a new motor in it