ADDED TO FUEL: At every fill-up add 4 ounces of Marvel Mystery Oil or Marvel Ultimate Fuel & Motor Treatment to every 10 gallons of gas. Regular use can lead to improved fuel economy.
ADDED TO ENGINE OIL: Use Marvel Mystery Oil or Marvel Ultimate Fuel & Motor Treatment in the crankcase to benefit oil. At your next oil change, replace 20% of your engine oil (traditional or synthetic) with Marvel Mystery Oil or Marvel Ultimate Fuel & Motor Treatment. For example, if your engine has a 5-quart oil capacity, replace one of the quarts with a quart of Marvel Mystery Oil Repeat at every oil change for optimal performance. Marvel Mystery Oil is not recommended for use in motorcycles with wet clutches.
Change the engine oil prior to storage to remove old contaminated oil from the engine.
Add Marvel Mystery Oil or Marvel Ultimate Fuel & Motor Treatment to the crankcase to enhance the cleaning properties of the oil. Replace 20% of your engine oil (traditional or synthetic) with Marvel Mystery Oil or Marvel Ultimate Fuel & Motor Treatment.