Berryman B-12 CHEMTOOL TOTAL FUEL SYSTEM CLEAN-UP (part #2616) is our strongest detergent-based gasoline additive and will thoroughly clean dirty fuel injectors, intake valves, and combustion chambers, and one bottle treats 16-21 gallons of gas. It also eliminates “octane creep,” a scenario where carbon buildup in the combustion chamber causes the engine to knock/ping at octane levels it previously ran well with. 2616 should be used every 5,000-10,000 miles. Both of these products contain the same active ingredients, but TOTAL FUEL SYSTEM CLEANUP also includes a detergent package that allows it to perform the additional cleanup of the fuel system.
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