See full version: How to use
OPTION 2: When air intakes openings are not accessible to MMO liquid oil fogging, Remove spark plugs. Pour a tablespoon of MMO through spark plug hole and into each cylinder. Let sit for 2 minutes. Crank engine for up to 10 seconds. Replace spark plugs.
ADDED TO FUEL: At every fill-up add 4 ounces of Marvel Mystery Oil to every 10 gallons of gas. Regular use can lead to a cleaner fuel system, valves, and top cylinder. more
Select your product and tell us where you’ll be using it to find all the usage and tips you need in order to make the most out of your Marvel product. We also have a selection of helpful FAQs to help find the answers you need quickly.
ADDED TO ENGINE OIL: Use Marvel Mystery Oil in the crankcase to enhance the cleaning properties of the oil. At your next oil change, replace 20% of your engine oil (traditional or synthetic) with Marvel Mystery Oil. 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 to help prevent sludge buildup in the oiling system.
OPTION 1: Small Engines: Remove air cleaner, start engine and let idle, slowly pour 1 ounce of MMO into the carburetor or air intake until a light smoke exhausts. Stop engine. more
Large Engines: Remove air cleaner, start engine and let idle, slowly pour 4 ounce of MMO into the carburetor or air intake until a light smoke exhausts. Stop engine.
No. MMO has undergone rigorous testing to ensure the safety of all internal components in your vehicle including highly-sensitive oxygen sensors, fuel sensors and catalytic converters.
No, MMO cannot be used in racing fuels such as methanol. Certain components of MMO are not compatible with methanol and will not mix with methanol. [links]
MMO can be used in all fuel containing up to 30% alcohol. here
Can I use MMO in two cycle engines? more
When added to oil will MMO thin the oil?
When is the best time to add MMO to the Oil?
ADDED TO FUEL: At every fill-up add 4 ounces of Marvel Ultimate Fuel & Motor Treatment to every 10 gallons of gas. Regular use can lead to a cleaner fuel system, valves, and top cylinder.
ADDED TO FUEL: At every fill-up add 4 ounces of Marvel Ultimate Fuel & Motor Treatment to every 10 gallons of gas. Regular use can lead to a cleaner fuel system resulting in smoother starts. more
OPTION 1: Small Engines: Remove air cleaner, start engine and let idle, slowly pour 1 ounce of Marvel Ultimate Fuel & Motor Treatment into the carburetor or air intake until a light smoke exhausts. Stop engine. [links]
ADDED TO ENGINE OIL: Use Marvel Mystery Oil in the crankcase to enhance oil lubrication and sludge control.
ADDED TO FUEL: At every fill-up add 4 ounces of Marvel Mystery Oil to every 10 gallons of diesel. Regular use can lead to improved fuel economy. more
ADDED TO FUEL: At every fill-up add 4 ounces of Marvel Mystery Oil to every 10 gallons of diesel. Regular use can lead to improved fuel economy. [links]