As far back as I can remember, this includes the days when 2 strokes were the only OB choice, all the OB manufacturers recommended a fuel additive. 2 stroke, 4 stroke, E-0, E-10 fuel all had an additive recommendation buried in the owner's manual. Nothing has ever really changed in fuel system maintenance recommendations. My new Mercury 4 stroke manual and a tag on the engine recommended Sta-Bil. Go figure. It makes me wonder who produces Merc's additive for them. The answer to that rhetorical is whoever will make it cheapest.
Randy
