Liveliner
Well-known member
<div>My Proline boat has been sitting for too long with about forty gallons of gasoline in the built-in tank. I recently pumped out about thirty gallons of it. I ran the gasoline in my Cherokee, a Honda and several small engines. The old gasoline seems to burn clean and good even in the lawnmowers so I do not think it is bad. What should I do? Run the old gas in the boat to get it out of the system , or should I add higher octane ethanol free gasoline to improve the quality of the gasoline I run through the Merc.</div><div>My thinking is that if I run the old gasoline out first, I should treat it with Marine Formula Sta-bil. If I add new Gasoline I should treat the entire amount with either Sea Foam or B-12 Chemtool. What do you folks recommend I should do?</div><div>Also What is the difference between Sea Foam and B-12 Chemtool? I bought both. The SeaFoam 15oz. is $8.97 vs. the B-12 16 oz. can at $2.97 . The cans, the lids and the contents seem to be the same. What is the difference other than six bucks for less?</div>