Marvel Mystery Oil - Automotive Additive Oil Enhancer and Fuel Treatment , 64 oz, Works with Vehicles with Gasoline and Diesel Engines
Marvel Mystery Oil - Automotive Additive Oil Enhancer and Fuel Treatment , 64 oz, Works with Vehicles with Gasoline and Diesel Engines
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Marvel Mystery Oil

Marvel Mystery Oil - Automotive Additive Oil Enhancer and Fuel Treatment , 64 oz, Works with Vehicles with Gasoline and Diesel Engines

4.7 stars out of 95 reviews
(4.7)|
95 ratings
Marvel Mystery Oil - Automotive Additive Oil Enhancer and Fuel Treatment , 64 oz, Works with Vehicles with Gasoline and Diesel EnginesMarvel Mystery Oil Automotive Additive Oil Enhancer and Fuel Treatment 64 oz Works with Vehicles with Gasoline and Diesel Engines12 pack Marvel Mystery Oil Automotive Additive Oil Enhancer and Fuel Treatment 64 oz Works with Vehicles with Gasoline and Diesel Engines6 pack Marvel Mystery Oil Automotive Additive Oil Enhancer and Fuel Treatment 64 oz Works with Vehicles with Gasoline and Diesel Engines2 pack Marvel Mystery Oil Automotive Additive Oil Enhancer and Fuel Treatment 64 oz Works with Vehicles with Gasoline and Diesel Engines
Pack Size:Single

Key item features

  • Engine Longevity: Automotive additive that helps your engine run better and longer
  • Smooth Operation: Provides positive lubrication for smoother starting and longer tool life
  • Residue Removal: Dissolves gum and sludge that reduce tool speed and power output
  • Rust Prevention: Prevents rust and corrosion to protect engine components
  • Enhanced Performance: Improves compression, power, and miles per gallon (MPG)
  • Versatile Use: Suitable for conventional, synthetic, and 2 and 4 cycle oils
  • Fuel Compatibility: Works with all gas types, including diesel and ethanol blends
  • Bulk Availability: Available in a 64 oz bottle for extended use
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Current price is $12.9720.3 ¢/fl oz
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Salisbury, 21801
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Marvel Mystery Oil - Automotive Additive Oil Enhancer and Fuel Treatment , 64 oz, Works with Vehicles with Gasoline and Diesel Engines $12.97 20.3 ¢/fl oz

Marvel Mystery Oil - Automotive Additive Oil Enhancer and Fuel Treatment , 64 oz, Works with Vehicles with Gasoline and Diesel Engines
current price $12.97
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Marvel Mystery Oil - Automotive Additive Oil Enhancer and Fuel Treatment , 64 oz, Works with Vehicles with Gasoline and Diesel Engines

4.7 out of 5 Stars. 95 reviews

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4.7 out of 5 stars
stars95 ratings24 reviews
How item rating is calculated
  1. 5 stars87% (83)
  2. 4 stars6% (6)
  3. 3 stars1% (1)
  4. 2 stars2% (2)
  5. 1 star3% (3)

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Showing 1-3 of 24 reviews

Nov 29, 2025
steven
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Do Yourself a Solid and Add Marvel Mystery Oil

I have used Marvel Mystery oil for centuries. I use it in all my motors. I have motorcycles, snowblower, 3 lawnmowers, my cars, outboards. Stuff here in Michigan is seasonal. we have 4-5 months of winter so some machines retire. I put marvel in the gas and they start each spring. Today , November 29th. first big snow, my Honda Snowblower started first pull. Not in small part by Marvel. I have restored motorcycles that have sat years. Most people would rebuild the carbs.... I just rode it clean with Marvel in the gas. it started on just one of 4..cyl...then 2...so I could go 30-40 mph with this CBR1000F....then the third fired up 300 miles later...a couple hundred more miles and it was running on all four...1000 more miles and it was smooth as new. So I bought the big bottle this time to save trips to Walmart. Also, with Oils, WalMart has unbeatable prices.

Helpful?7DMJ68RQEL3D11542052024
Jan 2, 2026
Mike
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Marvel Mystery Oil works Wonders

I tried Marvel Mystery Oil years ago based on inputs from different YouTube channels. I find that it does help increase mpg in my cars a little, and helps keep carburetors clean on my lawn mower, tractor and snow blower so they run smoothly. I even add a few ounces to my car oil about 200 miles before an oil change to clean out the sludge. You'd be surprised how much dirtier the oil is after running those few miles with the Mystery Oil. I like the product and will continue to use it. You might give it a try to see if it can help your engines.

Helpful?7DMJ68RQEL3D11542052024
Dec 14, 2025
richard
Walmart Associate
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Best value for gasoline additive to keep injectors clean %26 operating like new through continuous use! I add a few ounces to every tank full. I've never had an injector fail in over 20 years.

Helpful?7DMJ68RQEL3D11542052024