MaryKate Fuel Treatment and Stabilizer

works better than i thought

Excellent product. Had long time boat dealer mechanic recommend this, stating he never had any fuel wintering problems using this product. This is all he uses. This is all I now use.

I have used this product in very high heat location in Mexico for over 4 years with 9 month long periods of inactivity and I have never had a problem with fuel clogs with my two underdeck fuel tanks or in the outboard engine