I used to put some Marvel Mystry oil in a tapping engine when I changed the oil. It worked really good, but I'm not sure of any long term effects on the engine if any. Never held on to the cars that long afterwards.
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Praise the Lowered
67' Camaro - Worked 327, Hotchkis TVS suspension, 4 wheel cross drilled discs, AM radio FTL
05' Silverado - Stock, stock, and stock.
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