Has anybody had good experience with any of these? I ran a more costly one( slick 50 version?) and about 1000 miles later had an engine pulled apart.....I could not believe how much deposits were on everything....the car had about 55,00o miles on it...[img]i/expressions/face-icon-small-shocked.gif[/img]

 

I use Sea Foam. It is great stuff. It is safe for all engines, including chainsaws and snomobiles, and it even acts as a fuel preserver. That comes in handy when you think about how long some ATV's sit before getting used.

 

Depends on what you are trying to do. If the engine is in good shape and you have it tuned properly you should not need any of this stuff.