I use regular old Mobil-1 10W-40 & have for 58,000mi. No problems. Of course, I do have heavy-duty clutch springs, so it's harder for an oil-induced slip to happen.
Steelheart- '03 Speedmaster Black/Yellow
The Hayabusa Killa
16" Shorties/140 mains/Airbox drilled
Procom CDI
"There is no cure for Celibacy. But we can treat the symptoms."
