I must admit, i was a little worried about
oil psi on windsor when i picked it up, it was on25-30psi on idle and around 50 psi @ 4000rpm, gauge was flicking, but sourced the problem to a bad earth, also what
oil viscosity are you running, i know my 1998 windsor in an xh ute could not handle 10-30 as at idle the warning light would come on when hot.
changed
oil to 15-40 and problem was gone.