Marvel Diesel/Gasoline Fuel Treatment 1 gal, Pack of 4

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.