STP brand. 250 ml Surrogate lead. For engines 2 and 4 stroke engines designed for leaded petrol (cars, motorcycles, boats, lawn mower ...) lubricates and protects the engine valves. Allows engines originally designed to use leaded gasoline unleaded gasoline-powered Replace the protection offered to lead engines. Completely burned without leaving deposits Prevents power loss lubricating the valve and valve seats prevent wearing
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