FAQs

Top 5 asked questions

1
Question:

Can more than 4 oz of MMO be added per 10 gallons of fuel?

Answer:

Tests indicate that 4 oz/ 10 gallons of fuel is the optimum level to use in fuel according to engine tests. Using more may increase vehicle emissions or trip a check engine light in emission sensitive vehicles.

2
Question:

When is the best time to add MMO to the Oil?

Answer:

We recommend replacing up to 20% of the oil requirements with MMO at the beginning of an oil change. It can also be added anytime to the oil up to 300 miles prior to the next oil change.

3
Question:

When added to oil will MMO thin the oil?

Answer:

MMO is about a 5 wt oil. It will reduce the high end number of a multi-vis oil by 4 wt points. The low end number will stay the same when used as per directions.

4
Question:

Can I use MMO in two cycle engines?

Answer:

Add two cycle oil to gas as recommended by engine manufacturer. Add 0.25 ounces of MMO per gallon of gas.

5
Question:

Is MMO compatible with gasoline with ethanol?

Answer:

MMO can be used in all fuel containing up to 30% alcohol.

FAQs

Answer:

Marvel Oil Company recommends replacing between 10 and 25 percent of your motor oil with MMO. For example, if the crankcase capacity is 5-quarts, add 4 quarts of your favorite motor oil and one quart of Marvel Mystery Oil. If you get your oil changed at a "quick-lube" facility, bring a quart of Marvel with you and ask them to add it to your engine in lieu of one quart of traditional motor oil.

Answer:

No, you cannot use MMO to replace all the oil in the crankcase. The maximum amount of MMO to be used is 25% of crankcase capacity.

Answer:

Yes, MMO is compatible with synthetic, semi-synthetic blends and regular types of motor oils. However, if used in synthetic oils do not exceed your manufacturer’s recommended oil change intervals.

Answer:

Yes. In fact, many Marvel users who use MMO with every fill-up report significant increases in fuel mileage.

Answer:

Marvel recommends using 4oz of MMO for every 10 gallons of gasoline. If the fuel system is extremely dirty you can use up to 6oz. for every 10 gallons of gasoline.

Answer:

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.

Answer:

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.

Answer:

Yes, MMO is compatible with Biodiesel and will provide the same benefits as when added to typical fuels.

Answer:

When MMO is used in the recommended amounts in diesel fuel, it will not change the color. Off-road diesel fuel is dyed a bright red using a specific dye and concentration. Neither the dye used in MMO nor the concentration are the same as that used in off-road diesel fuel.

Answer:

Yes. MMO can be used in vehicles with fuel injectors. MMO provides additional lubrication to the injectors and helps prevent the formation of hard carbon deposits on the injectors. Injectors fouled with hard carbon deposits do not perform optimally and reduce mileage and performance.

Answer:

Yes, you can use MMO in diesel fuel as well as gasoline. Use the same amounts as the gasoline treatment recommendations-4ozs of MMO for every 10 gallons of fuel. However, MMO should not be used in diesel engines where low sulfur content diesel fuel is required as MMO will raise the sulfur level in the fuel by 1 part per million. We are required to state this to comply with federal EPA laws.

Answer:

No, neither the Marvel Air Tool Oil nor original formula MMO contains silicone.

Answer:

Yes, however we recommend the Marvel Air Tool Oil as it contains corrosion inhibitors to prolong tool life.

Answer:

Yes, you can use MMO as a fuel stabilizer. Use 4 ounces of Marvel for every 10 gallons of fuel.

Answer:

Yes, add MMO in the amounts recommended for fuel and oil.

Answer:

Yes, MMO is safe for usage in automatic transmissions. Use no more than 16 ounces of MMO in the automatic transmission.

Answer:

Yes, MMO can be used either by itself or mixed with other oil additives lubricants, just don’t exceed usage concentration.

Answer:

Yes, MMO is safe for use in 2-cycle engines. You can supplement your oil by adding up to 25% more MMO than the 2-cycle oil required.

Answer:

Automatic Transmissions (use up to 16oz.), Engine Oil (diesel or gas), Fuel (diesel or gas), Power Steering Units (use up to 2oz.)

Answer:

Manual Transmissions, Gear Boxes, Rear Differentials, Not for use in E85 or higher alcohol fuel

Answer:

Yes! Marvel Mystery Oil is completely safe in today's high-tech cars and provide the same benefits as it has since 1923-cleaner engines, upper cylinder lubrication, reduced acid and sludge build up, improved fuel economy, clean and lubricated fuel systems and many more!

Answer:

No, Marvel does not contain metallic or manganese-based compounds.

Answer:

No, MMO does not contain silicone. It is safe to use in auto body and paint shops.

Answer:

No, MMO does not contain methanol.

Answer:

Marvel mystery oil contains sulfur as 300 parts per million as a lubricant.

Answer:

No, MMO is not antifreeze or kerosene based.

Answer:

No, MMO will not harm rubber seals and gaskets.

Answer:

The shelf life of MMO is a minimum of seven years when tightly capped and stored away from excessive moisture. Normally, if the MMO looks good, it usually is safe to use.