On a more serious note, I used Klotz since 2000. I ran 3 snowcross seasons without burning a single motor down on 2 sleds. Without fail we ran leaner than all/most of the boys running Doo. Lucky? maybe People complain about oil on the everything (valves, ports etc) and say how their cheap brand leaves everything cleaner. If the idea is to lubricate most tuners (that is definately NOT me) would argue the coating is what keeps motors together. The oil is doing its job.
I have no scientific evidence to share but have seen and been shown the difference between a couple brands. Granted there was no control for CC, make, jetting or other specs but my experience with polaris and doo has been run the **** out of them, race them and klotz has been good to me.
That said, I have friends that put on 3x the miles I do and swear by Sea n Snow formerly Citgo but now Mystic...same same.
Just to qualify, its my biased opinion. Take it for what's it worth-
$25/gallon vs $15/gallon in NE Wisconsin