Re: Some general cooling system questions.

Posted by Fish'n Jim On 2022/8/16 8:48:28

With the age of parts, want to keep the pressure as low as you can. Watch the gauge. Stop a 1 psi increments and see if it holds or goes down. I wouldn't go above 7 psig, which is the cap rating most likely. Essentially doesn't have to hold more than that anyway. Could be a costly pressure test otherwise.