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Your cart is empty.'Oil Additive, Container Size 1 Gallon, Red, Transparent, Freezing Point -60 F, Flash Point 128 F, Pour Point -65 F, 0.876 Specific Gravity, Dissolves Insoluable, For Use With Automobile, Motorcycle, Marine, Two-Cycle, Tractor, Gasoline and Pre-2007 Diesel Motors, ORM-D Class 3 UN1268'
Buck
Reviewed in the United States on June 8, 2023
I use this in every tank of gas! I own 10 cars, it helps keep them running great!
ME. Ray
Reviewed in the United States on September 25, 2022
Add 10 oz to full tank every couple of months... cleaners entire fuel system... cheaper and better than seafoam
jrdr
Reviewed in the United States on May 15, 2022
I have used marvel mystery oil for many years with great results. I purchased from this vendor, there was damage to bottle (most likely in shipping) and the immediately took care of the issue! Great service! Highly recommend this vendor!
BobEaseShop
Reviewed in the United States on April 8, 2022
I wish I had one of the super cool 1950's 55 gallon metal drums of this like we once had at a shop I worked at when I was a boy. If it were full of MMO I'd most likely use it all up! I have a Valvoline metal can, and it's cool, but MMO is the best of art work and such a quality product.
ZORB
Reviewed in the United States on August 17, 2021
I'm a very busy man and this is very difficult to find at a good price. Walmart has it but they're never in stock. I need the gallon size because I added as an additive for my big truck. On an older truck this is an excellent additive to keep the valve train in good shape. Noticeable difference in my truck. I'm amazed at Amazon not only had it at a good price but I Can Count On the usual great quick delivery to my home.
Solar Son
Reviewed in the United States on May 4, 2021
Great product. Only reason I didn’t give it 5 stars is because it spills very bad when trying to pour. Bottle could easily be designed with a none spill spout.
Art Lange
Reviewed in the United Arab Emirates on October 11, 2021
This has been used in America for a century. Among other uses, great old school oil and gas additive for cleaning hydraulic lifters and top cylinder cleaning. Also a great penetrant and air tool lube. It smells good too.
KMac
Reviewed in the United States on March 2, 2019
I started "treating" my 94 Blazer 5.7L at 272,000 miles. I was using a quart of oil every 3,000 miles before the treatment. I used it in both the oil and fuel tank. I now have 283,000 and counting. Other than a very negligible rear main seal leak (which previously existed), I am down to almost no oil consumption over the same mileage. The engine runs noticeably smoother, no longer puffs smoke at startup and has increased power. I used this product for many years and had just forgotten about it. I am very pleased with the results I have seen and definitely recommend it. Thanks.
IZNUNYABIZNIZ
Reviewed in the United States on January 28, 2019
this stuff works i dont know what it does but its great stuff add it to your fuel and oil and you will not have any wear issues or problems with your engines been using it for 15 years now even in my air compressor for 25 years in so cal heat never a problem i lube my guns with it too.its a mystery how it works thats why its called mystery oil
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