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Gumout Multi-System Tune-Up is great for use in gas, ethanol, diesel and oil. Just add to the gas tank, the crankcase or via induction. Safe for use in turbocharged and supercharged vehicles, it will not void OEM/manufacturer's warranty. Add the entire bottle to a nearly empty gasoline tank at time of oil change, then refill tank with 18 to 35 gal. of gasoline. Do not refill tank until near empty. Repeat every 3,000 miles at time of oil change. For small engines, add to gasoline using 3/4 to 1 oz. per gal. of fuel. For small 2-cycle engines, add 2-cycle oil as recommended by the engine manufacturer.
- Oxygen sensor safe
- 16 oz.
- Limited warranty