I currently add Seafoam every time I fuel up at a ratio of 2 oz. per gallon of gas. Is this the correct ratio or should it be cut back to 1 oz. per gallon? Is it advisable to also add additional additives to further protect a Mercury 150 Optimax Pro XS? Are any additives required when you use ethanol free gasoline?
Thanks for your help.
Al
Thanks for your help.
Al