Stabil'd Dirtbike. Got snowblower out for the first time. Dose of sea foam with a full tank of fresh gas. Started on the 4thish pull. Warmed it up, changed oil, ran it again, changed oil again. Woulda changed it again (it's just a quart) as there was still some black nasty comin out with it, but my drain pan ran out of room (whoops).