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Originally Posted by Iowanian
how does this seafoam work?
Its a 50hrs merc outboard.
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It got its start in MN when a bunch of old boys starting using it on their boat motors. It went from there and Walmart, Napa and a lot of other outlets sell it. It will put a light coat of fine oil on the inside of the motor to prevent rust. I use it to knock out any carbon build up in engines. You suck it in through an intake, let it sit for a few hours, start the car and it smokes like a stack of tires on fire for about 5 minutes. The stuff works great. It also works well on lawn mowers that are being stored for the winter.