I just don't get the point of using other stuff, I knew a fella who put a quart of ATF in his gas tank every fill up, he also did the ATF in the oil flush occasionally & pired it down the carb to lube sticky lifters(never figgered out how it got from the intake down to the lifter valley, seems it would go thru the cylinders to me?)-his stuff didn't last any longer or run any better than mine using plain oil & gas. HRL is right, that engine is about as clean as it will get w/the gasoline going thru it.
