oil pressure ? oil brand and wieght?
I HAVE 406 SBC THAT HAS SOME TIME ON AND OFF TRACK. MY SITUATION IS IT STARTS UP WITH 70PSI OIL PRESSURE AT 1000 RPM IN PARK WITH VALVALENE 10/40 BUT WHEN IT WARMS UP TO 180-200 IT HOLDS 25 OR LESS. IS THIS COMMON AND SHOULD I RUN LIKE A STRAIGHT 30 SYNTHETIC?
IF SO WHAT WEIGHT IS BEST AND WHAT BRAND ?
IM PARTIAL TO MOBILE ONE BUT OPEN FOR SUGGESTIONS.. THANKS RJ