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The manual check was my mechanical Ck. Confirmed meter reading of 65. Could you tell me more about the by-pass valve? Or any other thoughts.
Avoid straight 40?? My 95 454's say to use straight 40. Both engines rebuilt when they had abut 1k hrs. been using delo 40 in old and rebuilts for last 10 yrs. Oil pressure is a rock hard 40psi at cruise (3200 rpms)