I'm using their Blend oil (first time), for me it was a compromise between going full syn over conventional. Since mine is air cooled, figure this should help out a bit, it was recommended to me by the shop also. As I've never heard of them before, I did a bit of searching and am happy with the reading. I guess time will tell, but since it's meets the specs, I don't really expect any issues since I don't do a lot of miles/tracking etc.