Re: oil pressure

Posted by Mike On 2011/7/7 20:23:35

If you have an accurate gauge i would trust that over a sender from a non-packard vendor. However i found my packard dash gauge doesn't read as accurate as the little one i mounted down by the oil sender on the block.

I heard a rule of thumb was 10psi for every 1000 rpm. 35 psi would be fine cruising.

I also thought that the manual said somewhere, when hot, 10ish psi idle and 35 (or maybe 40?)psi cruising down the road. It would sound like you're right on, but i'd check the manual rather than my memory.

I'm running straight 30 weight (rotella) at the moment with good luck. I was running 10-30 as my first flush after the motor swap for the first few tanks, and noticed after it was dirty that it was a good 3-5psi difference at idle, and about 5-7psi lower than the clean straight 30.