texasrices Posted September 25, 2011 Share #1 Posted September 25, 2011 I put one full can of Seafoam in a full tank about every three to four thousand miles. Is there such a thing as too much or too often when it comes to using Seafoam. For example...would it be alright to use maybe half a can every fill up??? Link to comment Share on other sites More sharing options...
Flyinfool Posted September 25, 2011 Share #2 Posted September 25, 2011 Using that much Seafoam will not hurt anything but the spark plugs, and gas mileage. I just add a couple of ounces at each fill as recommended on the can. Link to comment Share on other sites More sharing options...
Yammer Dan Posted September 25, 2011 Share #3 Posted September 25, 2011 (edited) Couple of ounces every other fill-up would be plenty to mantain once you got the system clean. I don't even use that much if it is running right. Just a splash when I think of it every 3rd or 4th tank. Edited September 26, 2011 by Yammer Dan Link to comment Share on other sites More sharing options...
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