Usually have 40 psi when running with
oil temp at 200. Today on a drive fell to 32 when warm and stayed there. Hot day, 10W-30
oil. Shold I go to a thicker
oil? 10W-40-10W-50/straigt 40? Engine has low hours after a rebuild last year. Why the sudden dop in oil pressure?
I know this has been discussed before, and did do a search, but I am concerned. cb