Re: 1941 Packard Clipper Eight Special Sedan

Posted by Owen_Dyneto On 2016/8/4 13:31:03

Depends a bit on what viscosity oil you're using and other factors but a generalization is that 35-40 psi with a warm engine at typical highway road speeds is a good pressure. Pressure at hot idle is not as indicative of engine condition but it should be at least 10 psi and hopefully more like 15-20 psi.