I use Sea Foam in my 2 stroke gas for my weed eaters, blowers, chain saws, etc. mainly because they have diaphragm type carbs.
When I had a two stroke outboard, I used the mercury premium plus oil and 89 octane non ethanol had that motor for 20 years, 94 to 2014, and never had the carbs off.
With my 4 stroke, I run a can of mercury kwikcleen every 6 months or so
Does any of it do any good? Not sure, but I don t think it harms anything.
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