Marvel Mystery Oil helps extend engine life by breaking down and removing harmful deposits of sludge and carbon in your engine oil. When regularly added to your fuel, it helps keep spark plugs and fuel injectors free of carbon deposits, resulting in increased fuel economy. Marvel Mystery Oil fortifies motor oil for increased resistance to high temperatures and easier cold-weather starting.
Helps improve fuel economy
Cleans and lubricates fuel injectors and carburetors
Reduces and prevents varnish and gum build-up
Prevents valve sticking and clatter
Prevents oil breakdown caused by extreme temperatures