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    6 Products

    Engine Treatments

    Image of Product. Front orientation. Oil Additives. Engine Treatments, Marvel Mystery Oil.

    Marvel

    Mystery Oil

    Mix these treatments with gasoline or oil to improve engine performance.
    Marvel Mystery Oil—Add Marvel Mystery Oil to gasoline and oil. In gas it cleans fuel injectors, prevents sticky valves, and limits buildup. In oil it eases start-up in cold temperatures, extends oil life, and prevents the formation of acid and sludge. It can also be used with marine and diesel engines.
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    Marvel Mystery Oil
    16 fl. oz.BottleNot RatedRedYesGasoline, Diesel00000000000600000000000000
    32 fl. oz.BottleNot RatedRedYesGasoline, Diesel0000000000060000000000000
    1 gal.JugNot RatedRedYesGasoline, Diesel00000000000400000000000000
     
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