Originally Posted By: buster
I believe it does take time as JAG said. It's very smooth at high rpm's.
harry, I was using 20wt oils of many different brands. Mostly Amsoil/M1.
I briefly went with M1 5W-30 before the move to Amsoil. I was not happy with the increased engine noise and the fact that it turned black in a very short time. Thinking back, perhaps I didn't give M1 a proper chance. Anyway, that's all academic for me now, as long as Amsoil maintains or improves on it's offerings, I will be there cash in hand.