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๐ ๏ธ Unlock your engineโs hidden potential with Marvel Mystery Oil!
Marvel Mystery Oil Original Motor Treatment is a powerful 128 oz. oil additive designed to clean and lubricate fuel injectors and carburetors, reduce varnish and gum build-up, prevent valve sticking and clatter, and protect oil from breaking down under extreme temperatures. Trusted across automotive, marine, and small engine applications, it ensures smoother, longer-lasting engine performance.






| ASIN | B00328BLNC |
| Best Sellers Rank | #19,617 in Automotive ( See Top 100 in Automotive ) #36 in Engine & Oil Fluid Additives |
| Brand | Marvel Mystery Oil |
| Customer Reviews | 4.7 4.7 out of 5 stars (235) |
| Date First Available | January 16, 2007 |
| Item Weight | 0.01 ounces |
| Item model number | MM14R |
| Manufacturer | MARVEL MYSTERY OIL |
| Manufacturer Part Number | MM14R |
| Model | Oil Additive, 1Gal, Red, Transparent |
| Product Dimensions | 15.8 x 9.56 x 11.63 inches |
D**N
A must
Works like it should
D**S
Older product worth itโs weight in gold
I use this product as a oil & gas additive for years keeps oil from breaking down & keeps carburetor clean which is beneficial during the winter on my lawn mowers & all of my saws works well to protect from the damage that ethanol does.
J**Y
There is a reason why they call it Marvel Mystery Oil, because it is!
I've even used it to soften old hard leather! It's a great lubricant that has been around for years.
D**W
Engine purrs
Best product on the market
X**8
Marvel still reliable after all these years
Follow the instructions and your car will be running more efficiently! Thank you Marvel! It's cheaper to buy the gallon in the long run.
A**.
It's Marvelous
I've used it in fuel and oil for close to 50 years.
L**N
This product will help your motor
I purchased an older car that had a ticking - maybe a slight valve sticking problem. I put a small amount of Marvel Mystery Oil in the gas tank and also replaced half a quart of oil while changing oil. One day while on the expressway I changed lanes and all of a sudden this other car changed lanes too. In an effort to get out of the way I floored it. I looked in the rearview mirror and their was this cloud of smoke behind me. I mean huge dark cloud as I raced away. It was amazing, at first a litle scary then I realized my engine needed this. A good blowout. My motor is so quiet and idles so smooth that I hear the cars engine next to me in traffic but not mine. I actually thought on one occasion the engine had stopped but i blipped the gas and yes it was running. I will continue to use this product for the life of my car.
1**R
Good Stuff...
My father, a master technician and engineer recommended this stuff to me many years ago. He had a dozen old toys...cars, boats, motorcycles, airplanes, etc. This is the only additive he recommended and felt that it was good for upper valve train and seats, especially on older machines. I'm using it on all my stuff. Old and new.
A**.
EXCELENTE PRODUCTO
Ya lo habia utilizado, y si...si funciona, claro que debes hacerlo en varios cambios de aceite y saldran los resultados, si estaba humeando..lo deja de hacer asi de facil..
Trustpilot
1 month ago
1 month ago