I have been running Valvoline VR1 20-50wt conventional oil in a street strip 400 sbc with a nitride hardened flat tappet cam on E85 fuel. No known problems. Is this a bad choice for oil type and weight? I intended to run 20-50 Brad Penn initially. So I called Brad Penn oil company to ask them if running their oil with E85 fuel would be ok. They said do not run their oil with E85... So I started running the Valvoline listed above. Any info on E85 compatible oil that will not flatten my cam would be much appreciated.
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