Can Oil Be Put in a Gas Tank?


Quick Answer

While a small amount of oil, diluted with a full tank of gasoline, does not harm the engine, it is not wise to add oil to a gas tank. Too much oil can do significant harm to the fuel system.

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Full Answer

Many people have a small amount of a gas-oil mixture left over by autumn, because they are no longer using the lawn equipment that uses that mixture. As long as there is no more than a gallon or two of the mixture, and if the tank is already mostly full of gasoline, it is all right to add it to the tank.

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