Berryman B-60 High-Mileage FUEL SYSTEM REJUVENATOR (part #7516) is EPA-approved for on-road use at a maximum concentration of 1 fl/gal of gasoline. However, for off-road use, you can safely double the concentration. If you’re going to quickly run the tank out, you can also safely add 2 fl oz/gal of Berryman B-12 CHEMTOOL FUEL INJECTOR CLEANER (part #0116) at the same time. (Both of these products are compatible with all materials of construction in all modern fuel systems at these concentrations; we just recommend running the product out right away out of an abundance of caution.)
For best results after running out the entirety of the combination of products, add 1 fl oz/gal of 0116 if the motorcycle will be put into regular use or add 1 fl oz/gal of 7516 if the bike will only be used sporadically such that the gasoline will last more than about 60 days. Then fill the tank with fresh gasoline. Run the engine briefly to ensure the fresh mix has made it through the entire fuel system.
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