ever think it might just be a bad sending unit? Mine used to do the same, until i bought a new one for 35 bucks and installed it.

yea i did think bout that actully

hmm, id have it hooked up to an actual pressure tester, just to verify it all.

How many miles are on your engine? It is pretty much normal for oil pressure to very slowly drop over time as clearance increases on all the bearing surfaces under pressure. For cars over 100K mi., I have always used higher viscosity oils to maintain a better film when the car is hot and working. Oil pressure will increase with higher viscosity oils also. For cars that I know are pretty well worn, I have run Valvoline straight 50 weight racing oil. It is in my VW vanagon right now. When I purchased this van, it was ringing a low oil pressure alarm at idle when hot. Changed to 50WT, 8000 miles ago. So far, no light, no alarm, no knock, runs fine.

For tighter engines, you might consider Shell Rotella T 15W-40. This is an excellent oil with a superior additive package, that will provide better protection for a worn engine than 10W-30.

BTW, many years ago, I read in a Mercedes Benz owners manual that their engine (2.2l gasoline) needed a minimum of 7 pounds of oil pressure for each 1000 rpm (!)

Also, when you start your car, never rev it up or drive it until the oil pressure is up. I think more bearings are damaged by this than any other cause.

Just my $.02

thanks.. the motor has 97,000 on it, one service writer suggested 15/40 or 10/40

thjis is a recent issue, however i think the fact that the warm weather has come back might have somethin to do w/ it....

Don't mean to steal thread.. but wat does a high pressure mean?

my oil psi was low due to the lower oil cooler line after i replace that and the radiator with another oil cooler, trans cooler then i will be the coolest