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Currently I'm running mix 50/50 of chevron 5w-30 and exxon 5w-20 and AC 1127 filter plus 5 oz. of Valvoline Synpower Oil Treatment(VSOT) . There is a lot of moly in Exxon superflo 5w-20 and other stuff in VSOT help also. My engine runs smooth & quiet. The oil pressure when cold about 80psi but it drop to like 40@2500rpm when warm up. I'll go to a chevron 10w-30 for spring & summer and I still have couple more bottle
of valvoline stuff(red and silver) to use .
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