In the words of the late Smokey Yunick.... You can pour it in your engine, or you can pour it on the ground, it makes about the same difference. You want power from your oil, use the race version from royal Purple. I've seen 6 flywheel horse power from a roller motor spinnin 8500. If you can't justify spending 12$s a quart for 6 HP (I can't) then just use mobile 1 and be happy.
