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    SAE50) or 20w50

    Great forum.I have a 1966 427 so. It has a mild build w/about 475hp. My cold idle oil presure is about 55. My hot oil pressure at idle is 20-30. Oil pressure at 3000+rpm hot is around 55-60. My question is since the car is only driven on nice 60deg+ days, could I use a sae50 vs a 20w50 oil?? The...
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