Know there's been some questions here, but maybe not since 2010. Haven't used it in my saws, but had reason today to use it on a rototiller as a last resort before taking the carb apart. And it worked. The tiller would only idle, and only choked, and wouldn't start w/o starting fluid. Neither could I get any adjustment--turnin the screw did nuthin. Tried Chevron Techron, heavy dose and runnin for hours. Figured, WTH. Knew it was really only IPA, lite oil and Coleman fuel, but I did not wanna take that carb apart. Added Seafoam to the gas and down the carb, and after a coupla smoke sessions it ran as good as new, WOT, easy adjustment, and started first pull. The owner was thrilled. Flame away. Just saying...I for one was glad for it.