MARVEL MYSTERY OIL® Add Your Review $10.49 Available: in stock Size ADD TO CART Use in gasoline, biodiesel & diesel fuels Use in both regular & synthetic engine oil Automatic transmissions Power steering units 2-cycle engines Safe to mix with other oil additives & lubricants WARNING: ...
Marvel Mystery Oil has been improving power and performance since the 1920s. Check out our products to see how your engine can be improved.
Marvel Mystery Oil is an additive that was fist sold in 1923 through the Marvel Oil Company. It was created to clean the carburetors in engines made after World War I, as they would easily get clogged. The gasoline at that time was low-grade and would often coat the carburetors with le...