All my two strokes are premixed now, but I have always favored Amsoil saber at 50 to 1, even when they were injected.i like pre-mixing because then i can only blame me when it blows up.I use the same mixture for my jet ski's, CR500, 2 RD's and soon the new sled and I have never has a problem. My ( hopefully) new sponser, HPV Cycle out of Lincoln, Ne is a two stroke shop and he use's the same oil at 70-1 with no known failures. Brad, the owner, has a very wicked rd that he beats. He said he @ 20,000 miles he tore it down and found no measurable wear.
Asphalt's for racing
Dirt's for planting corn