Wish I didn't know

I just hooked up my AutoMeter electric gauges. I had to fab a seperate block in order to keep both the idiot light and mount the gauge sending unit. Have 1200psi hose connecting from engine to mounting block, mounted on the fender apron. I know the hose is overkill, but it was free.

Fired up the car, no leaks (good) cold engine idle oil pressure was 25lbs.
Took a ride, warmed things up, and at 60mph oil pressure was about 37lbs.

Buick service manual says 33lbs @ 2400rpm.

Engine has 109,000 on it, doesn't smoke, leak or make any weird noises.

Before I invest in another gauge to check out the electric sending unit for the gauge, what do you all think?

Any input is appreciated.

 

nothing wrong with that oil pressure. my 72 gs 350 runs 40 lbs when warmed up. i use castrol gtx 10w40.

 

here is some more info on the subject. What happens when you rev the motor up to about 5000 rpm? as long as you have about 50 psi at 5000 you'll be fine.

http://www.v8buick.com/showthread.php?t=102267&highlight=oil+pressure

 

It sounds good to me.

 

To me the cold idle seems a little bit low. What is the pressure at a hot idle?

Erik

 

Mine runs at 15lb hot idle, 25/30 cold, 50/55 at 4,000 rpm or above.