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I know many of the stockers and super stockers run a light oil and gain some ET, but for regular bracket racing do some of you run thin oil successfully with minimal engine wear over a season or two?



In my case 0 weight is only used for class run offs, 5-20 used for eliminations that weekend and all year long.

What you can get away with for viscosity depends largely on clearances. I'd take it one step down in viscosity at a time, until you reach the oil pressure you're looking for.