My old motor was on the low side, but when I had the crank looked at, it had no wear and was only polished. I went standard on the bearings again and the new motor was a little lower than I liked. I run 20w50 and get about 25PSI at idle and about 50PSI once the RPM's come up. If the pressure comes up pretty quick, you are probably fine. You might just want to run a heavier oil. Ford's only specification is 40-60 PSI @ 2000 RPM's!
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