Royal Purple is great stuff, not usually as locally available though, and more expensive. Mobil is awesome, relatively cheap, and at most stores. Mobil is great stuff, don't let this thread deter you...RP, M1, Amsoil....all great, amongst others. I've used M1 almost exclusively in all my vehicles, motorcycles, and small engine equipment always and never an issue with it. I also use RP in my buell as the bike runs very hot, and RP does a great job at lowering operating temp.
Breathing in and out is good enough for me.