I agree, no issues from what I've noticed. I always use Triumph oil in my newer GT. I use to use Castrol 4T in my R3T, but the dealer said not. Since it is still under warranty, I don't have an issue with that. I worry about friction modifiers as well with different oils. With all that said, I do notice a little studder/jutter when taking off in first gear. I never considered it to be any kind of a issue just being the way it is. Lingering on the clutch on takeoff seems to be the problem rather than just letting it out and going. My clutch doesn't get a lot of use with the quickshifter installed. I've got that figured out so I just give it throttle and go.