mike rousseau Posted September 2, 2011 Report Share Posted September 2, 2011 I have about 20 liters of gas in my tank The bottle says it treats 30-95 liters... Do I add the whole thing or half or.... You guys seem like seafoam pros.... How much? It's for a 40hp 4 stroke outboard... Link to comment Share on other sites More sharing options...
lew Posted September 2, 2011 Report Share Posted September 2, 2011 (edited) Oops, I read your post wrong Mike...carry on Edited September 2, 2011 by lew Link to comment Share on other sites More sharing options...
ccmtcanada Posted September 2, 2011 Report Share Posted September 2, 2011 Maybe this website can help... http://www.seafoamsales.com/how-to-use-sea-foam-motor-treatment.html It tells how to use it depending on what your needs are....there is also a video there.... Good luck! Link to comment Share on other sites More sharing options...
Muskieman Posted September 2, 2011 Report Share Posted September 2, 2011 1/2 Can will do just fine.... pour the rest in the crankcase of your truck 1000k before your next oil change.... if you do it yourself notice all the sludge that comes out. SEAFOAM I put that S#$% in everything ! Randy Link to comment Share on other sites More sharing options...
solopaddler Posted September 2, 2011 Report Share Posted September 2, 2011 1/2 Can will do just fine.... pour the rest in the crankcase of your truck 1000k before your next oil change.... if you do it yourself notice all the sludge that comes out. SEAFOAM I put that S#$% in everything ! Randy Really Randy? In the crankcase? Link to comment Share on other sites More sharing options...
fishnsled Posted September 2, 2011 Report Share Posted September 2, 2011 Really Randy? In the crankcase? Check out the link that Cliff posted. You can use that $%@* in everything. Link to comment Share on other sites More sharing options...
ehg Posted September 2, 2011 Report Share Posted September 2, 2011 Don't often use additives in my outboard. If i do i use SEAFOAM. SEAFOAM I put that S#$% in everything ! Stay seafoamy my fiend. Link to comment Share on other sites More sharing options...
Sinker Posted September 2, 2011 Report Share Posted September 2, 2011 Use the whole can in 20 liters. Run it good and hot, let it sit until it cools down, then really run it hard. I do this once a season on mine, but mine is a two stroke. It will clear a lot of gunk out of a carb though, that I know for sure. S. Link to comment Share on other sites More sharing options...
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