Synthetic Oil?

[Jack E/NJ]

20psi fast idle hot. Nearly the same cold. 30psi max revved. Less than 2K/yr. Jack E/NJ

[BobR35]

Originally Posted by Jack E/NJ

20psi fast idle hot. Nearly the same cold. 30psi max revved. Less than 2K/yr. Jack E/NJ

I think those are amazing numbers on that light weight oil. Your engine must be "tight" ! I didn't think you could run that lo wt oil and then still get that kind of pressure. I get high, (35), cold, and it will do 15-20 @ idle in the cooler weather, ie: 70* outside or colder, but in the 80* + it drops significantly, and that's on 20/50! Good for you and thanks for the info.