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Marvel Mystery Oil Marvel Mystery Oil MM12R Oil Enhancer & Fuel Treatment (16oz.)
30 day replacement if defective
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Product Information
Product Details
Part No. MM12R
Warranty Details (30 DAY REPLACEMENT IF DEFECTIVE)
Marvel Mystery Oil offers long lasting protection to your car's hard-working engine by cleaning and adding a lubricating layer unparalleled by the other fuel and motor treatments. Adding Marvel Mystery Oil to your gas tank restores engine performance, improves gasoline mileage, extends spark plug life and prevents gum build-up. It also cleans and lubricates fuel injectors and carburetors. Added to oil, it prevents valve sticking and clatter, fortifies properties of engine oil, prevents breakdown caused by extreme temperatures, reduces and prevents acid and sludge formation and promotes easier freezing weather starts.
Product Features:
Product Features:
- Provides top end lubrication essential for restoring power and fuel economy
- Advanced engine technology stabilizes fuel for months and helps promote easy start-ups
- Prevents rust and corrosion from Ethanol containing fuels
- Reduces cold weather starts and creates smoother starts
- Can be used in all engines including direct injection (GDI and hybrids)
Specifications
Diesel Compatible:
Yes
Oil Quantity Treated:
5 qt
Stops Leaks:
Yes
Synthetic Oil Compatible:
Yes
4.61 out of 5
129 Customer Reviews
98% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
103
4 Stars
15
3 Stars
4
2 Stars
1
1 Star
6
Pros
36
Improves Vehicle Performance
33
Runs Clean
28
Reduces Wear
23
Safe
3
(null)
Cons
77
No
10
(null)
5
None
4
Yes
1
Thins Oil
Most Liked Positive Review
Mystery oil is a marvel
I first got introduced to Marvel when I got a world war I sword that had tarnish and rust on it, but was saveable. My grandfather said put Marvel Mystery in scabbard and give it a week,just change it to keep clean every other day but let blade sit in it.I did it for month and when i took blade out,I could see tatoo on blade I didn't see before because of surface rust and tarnish.Didn't hurt on value either. He and an Older friend told me that they swear by Marvel for years on their cars.Always put it in on oil changes now.First thing I do when I buy car is change oil and put marvel in.
Most Liked Negative Review
No
to wide for a lot of places
Reviewed by 129 Customers
I use as a GAS ADDITIVE every tankfull
I pour in a few ounces basically every time I add gasoline, right before pumping the gas. One quart treats about 80-100 gallons of fuel. That costs just pennies a gallon.This cleans the fuel system, lubricates many electric fuel pumps, and also lubes rings and intake valves. I prefer this over premium gas. I only recommend premium fuel for turbos and supercharged engines, or, once in a while for the extra additives it has.
Bottom Line Yes, I would recommend to a friend
The all time #1 fuel and oil supplement
Verified Buyer -
This stuff is perfect to use on a regular basis in your gas tank for FUEL ECONOMY and PERFORMANCE. And it's inexpensive too! Wouldn't use anything else on a regular basis.
Bottom Line Yes, I would recommend to a friend
I'm a believer!!!
Verified Buyer -
I added to a couple small engines.
1. A 1970 John Deere with stock Tecumseh engine. Put in the oil and gas. Now I can't let off the key fast enough and it smoothed out and purrs like a kitten.
2. A 1967 Kohler 12 HP on a Wheel Horse. Cut down on the exhaust smoke and same as the Tecumseh, cant let off the key quick enough. I have never seen small engines start so easily, especially 40+ year old engines. The only negative was I had to clean the carb out after running a while due to all the crud that broke loose from the fuel system after using this stuff, but this is what it is supposed to do!!!
Bottom Line Yes, I would recommend to a friend
Mystery oil is a marvel
I first got introduced to Marvel when I got a world war I sword that had tarnish and rust on it, but was saveable. My grandfather said put Marvel Mystery in scabbard and give it a week,just change it to keep clean every other day but let blade sit in it.I did it for month and when i took blade out,I could see tatoo on blade I didn't see before because of surface rust and tarnish.Didn't hurt on value either. He and an Older friend told me that they swear by Marvel for years on their cars.Always put it in on oil changes now.First thing I do when I buy car is change oil and put marvel in.
Bottom Line Yes, I would recommend to a friend
Very good product!
Verified Buyer -
It is cheap and easy to use. It can make your car clean.
Bottom Line Yes, I would recommend to a friend
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