The other day I made a Summit order and came up $9 shy of free shipping. The math said spend the $9. So just on a whim I bought a bottle of SeaFoam. Never used it or seen it used. The can says to add it to the fuel, but I have heard of dribbling it down the carb while running. I have a pretty hot 355 that tends to load up a little on the street. I thought SeaFoam might clean it up a little. Is it just snake oil? Or does it really work? What is the difference of just dribbling water down the carb? Tell me how you used it and your results.
"Mechanic in a Can". I put a pint into each of my cars before I go to Florida for the winter. Never had a problem with any of 'em when I came back, I've been doing this for twenty years now, and at least it never hurt anything. "Can't hurt, might help".
The "search' function works well here !! LOTSA...reading... https://www.jalopyjournal.com/forum/search/450468112/?q=sea+foam&o=relevance&c[node]=5 Mike
Had an OT service truck that sat alot. Only used it when needed. One day, after it sat for a few months, I started it and apparently one or more valves seemed to have stuck open. Put Seafoam in with the engine oil, as directed. Started it and let it run till warmed. Shut er down and came back in a few days. It started up quietly with no ticking or clacking. Then took it for an oil change. It never did that again.
A lot of two stroke engine makers recommend using it in the gas and oil mix. Must be something to it or they have stock in the Seafoam company…
I've known people who swear by it as a fuel stabilizer and put some in the tank during the Winter down time. I'm just a bit leery of a product that goes either in the tank or the crankcase.
Many moons ago, I worked at a pleasure boat outfit. The Evinrude/Johnson mechanic would use this before doing any tuning. I asked him what the stuff was that he was spraying into the cylinders...Sea Foam. He told me it loosens up the carbon so it can be cleaned from inside the combustion chambers and pistons. He would fire them up after a tune, and indeed, carbon would blow out the exhaust.
I have used Sea Foam for the past 10 years. I live in a cold weather climate and use it to stabilize my fuel. I dump it in the gas tank when I Winterize my 2 cars. Each Spring the fuel seems to be just fine, never had a problem. I also dump it in the gas can I use for my snow blower and riding lawn mower. Once again, never had an issue with it. In fact, the next time I go to Menards I need to buy a few more cans as Winter is on its way. The 1 year I did not use it, the gas went bad over Winter. The only fuel stabilizer I've been told to stay away from is Stabil. As far as Sea Foam, I am very anal and protective of my cars and equipment. So for me to trust a product, it needs to be legit.
I have used it a few times ... more as a preventive thing and not to actually fix anything. Awhile back I watched a youtube video he wanted to try it. He had a motorcycle with 4 carburetors on it and had been sitting for awhile. It ran sorta ok but he needed to tear them down to clean them .... lets try seafoam. By the time he rode a tank of gas out of it the carbs were working perfectly. I have to pull the oil pan on my truck before I start driving it, check for sludge .... I have been using detergent oil in it and changed it twice while I only yard drive it .... I will add seafoam to it also before I pull the pan.
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