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Evinrude Johnson Carbon Guard Fuel Additive is a gasoline additive formulated to minimize deposit build-up in 2-cycle and 4-cycle marine engines when used as directed. Carbon guard will provide:
For 2-cycle Engines - Add 1 oz. of Carbon Guard for every 8 gallons of gasoline.
For 4-cycle Engines - Add 1 oz of Carbon Guard for every 16 gallons of gasoline.
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