A unique blend of petroleum products formulated for use as an oil and fuel additive. Protect engine valves, stems and guides. It provides additional top end lubrication. Reduce acid and sludge formation. Formulated with anti-wear additives, Marvel Mystery Oil improves motor oil performance. Prevents engine wear and provides for a cleaner running engine which results in improved gas mileage and lengthens spark plug life. Helps improve fuel economyCleans and lubricates fuel injectors and carburetorsReduces and prevents varnish and gum build-upPrevents valve sticking and clatterPrevents oil breakdown caused by extreme temperatures