Manufacturer | Marvel Mystery Oil |
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Brand | Marvel Mystery Oil |
Model | MM13 |
Item Weight | 2 pounds |
Product Dimensions | 2.25 x 4.5 x 10.25 inches |
Item model number | MM13R |
Is Discontinued By Manufacturer | No |
Manufacturer Part Number | 50095 |
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67% positive over last 12 months
88% positive over last 12 months
98% positive over last 12 months
Marvel MM13R Mystery Oil - 32 oz.
Purchase options and add-ons
Brand | Marvel Mystery Oil |
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About this item
- Helps improve fuel economy
- Cleans and lubricates fuel injectors and carburetors
- Reduces and prevents varnish and gum build-up
- Prevents valve sticking and clatter
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Top Brand: Marvel Mystery Oil
From the manufacturer
About Marvel Mystery Oil
Born in Chicago in 1923, Marvel Mystery Oil was developed to combat deposits on carburetors caused by poorly refined gasoline of the age. Marvels popularity soared as word spread of its effectiveness in treating all types of engine ailments and was used extensively in WWII on everything from airplanes to battleships to tanks. Today, Marvel Mystery Oil provides vehicle owners the ability to solve scores of automotive ailments with one product that can be added to both oil and fuel
- Improves Compression, Power & MPG
- Lubricates Upper Cylinder for Smoother Idling
- Keeps Engine Clean from Sludge
Added to Engine Oil:
At your next oil change, replace 20% of your engine oil (traditional or synthetic) with Marvel Mystery Oil. For example, if your engine has a 5-quart oil capacity, replace one of the quarts with a quart of Marvel Mystery Oil. Repeat at every oil change for optimal performance.
USE IN: Conventional, Synthetic, 2 & 4 Cycle Oil.
Added to Fuel:
At every fill-up add 4 ounces of Marvel Mystery Oil to every 10 gallons of gas or diesel. An average passenger car tank is 15 gallons, so you would add 6 ounces at every fill-up. Regular use can lead to improved fuel economy.
USE IN: All Gas, Diesel, & Ethanol Fuel Blends.
New to the Marvel Family:
Marvel Ultimate Fuel & Motor Treatment can be used in all engines including direct injection (GDI) and hybrids. Marvel Ultimate is also ideal for high mileage vehicles and for preventative maintenance. Marvel Ultimate should be added to fuel or used in the crankcase in oil; specially formulated even for use in synthetic oil and with most advanced fuels including top tier, ethanol blends, and biodiesels
Product Description
Marvel Mystery Lubricating Oil is safe for catalytic converters and oxygen sensors. Added to gas it cleans and lubricates fuel injectors and carburetors, improves gasoline mileage, extends spark plug life, reduces and prevents varnish and gum build-up. 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 cold weather starts.
Product information
Technical Details
Additional Information
ASIN | B0009JKGJW |
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Customer Reviews |
4.7 out of 5 stars |
Best Sellers Rank | #25,743 in Automotive (See Top 100 in Automotive) #47 in Engine & Oil Fluid Additives |
Date First Available | July 7, 2004 |
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance, value, smoothness, quality and cleaning of the auto oil. They mention that it does its job well, it's well worth having and that it helps keep the spark plugs and valves clean. They appreciate the effect on gas, and power. That said, opinions are mixed on noise.
AI-generated from the text of customer reviews
Customers like the performance of the auto oil. They mention that it does its job well, their car runs very good, and they have never had any issues. They also say that it works great for freeing old stuck engines.
"Lol. This stuff is like a miracle cure for everything!! Pretty sure carpet baggers sold it for an constipation cure in the old Wild West days!!..." Read more
"Great Product, WORKS !!" Read more
"Excellent product! Nothing worked in trying to start my snow blower this year until Marvel Mystery oil was recommended...." Read more
"I added 1 tbsp into my weed wacker 30 seconds later it works perfect, I thought the carburetor was bad...." Read more
Customers appreciate the value of the auto oil. They mention it's a good price, has quality, and is worth having.
"I have been using MMM for over 40 years. This was the best price I have found." Read more
"Love it. Well worth having" Read more
"...The price is ok if you are a prime member. It is the same price at Walmart however for this size currently...." Read more
"...As a hobbyist the uses are endless. Great deal for the money" Read more
Customers like the smoothness of the auto oil. They say that it provides a smoother ride and the car is running smoother than before. Some mention that it improves off-idle acceleration. Overall, customers are satisfied with the product's smoothness.
"...Like I said, the engine runs relatively well and I've been pleased, but I'm not certain of the benefits, if any, at this point...." Read more
"...tank didnt use much and i have to say i did notice my car idling smooth considerably better then before i also had just started using that tracker..." Read more
"...Not only does my mdx idle smoother, but it also has more power and a noticeable mpg increase. My car was measured at 13.4 mpg with Premium gas...." Read more
"...I prefer Marvel over Engine Flush as it is gentler and I dont have to worry about too much sludge being released at once possibly clogging up the..." Read more
Customers are satisfied with the quality of the auto oil. They mention that it is excellent stuff for freeing up stuck mechanical parts like engines, and is a very good product. They also say that it's reliable and a great multi-use product.
"Good stuff" Read more
"...Overall for the price and google searches it is a very good product depending on how you use it. In gas tank or in the crank case." Read more
"This stuff is great. I was having trouble getting my lawn mower to stay running and when it did it was not running smooth...." Read more
"This stuff is great!!! Use it in your transmission. crankcase, fuel tank and use it to mix gas/ oil in 2 cycle engine...." Read more
Customers like the cleaning capabilities of the auto oil. They say it's good at cleaning stuff out, helps keep the spark plugs and valves clean, and keeps the sludge to a minimum. Some customers also say that it' s a great maintenance fluid for their engine.
"...done using Mystery Oil, although I am impressed with it's ability to clean out my engine. Actually quite pleased with the results, increased a star!" Read more
"...Usually after 3 treatments they have a nice clean camshaft and no sludge...." Read more
"...MMO is an excellent way to keep the upper cylinder lubed and the fuel system clean...." Read more
"...Cleans the crud and deposits from fuel and lubricating systems. Great in iron head Harleys." Read more
Customers like the effect on gas of the auto oil. They say it is a great gas and oil additive, it rejuvenates gasoline, and it is the best fuel treatment they have ever used. It is good for both an oil additive and fuel additive, and works wonders to increase the octane number of gasoline. Overall, customers are happy with the product's effectiveness in all gas and engine applications.
"...have used Marvel before than you know it really does help in ALL gas and oil applications. The price is ok if you are a prime member...." Read more
"...I have also, noticed a better result in gas. I have older vehicles too, 1994 and 1999. It just seems to work better in gas as opposed to oil...." Read more
"...This is the key as it helps to effectively mix it into the fuel as opposed to just sitting there." Read more
"The best gas and oil additive that I've ever used for gasoline engines...." Read more
Customers are satisfied with the power of the auto oil. They mention that it increases fuel and performance, and prevents engine deterioration and further corrosion. Customers also say that it works well and extends the life of their oil.
"...Not only does my mdx idle smoother, but it also has more power and a noticeable mpg increase. My car was measured at 13.4 mpg with Premium gas...." Read more
"...which in return makes you car run a lot better and gives you some better fuel economy...." Read more
"...The engine also tends to stammer less too and I feel confident with how silky the engine is...." Read more
"...way or form, but it could very well be working and preventing the engine from deteriorating and further corrosion." Read more
Customers have mixed opinions about the noise of the oil. Some mention that it quiets the clattering lifters, while others say that the ticking was loud and obvious. Some customers also say that their engine runs and sounds so much better.
"...During the week stays quiet at start. If it sits for the weekend or a few days during the week it will clack a little on startup like it’s old self...." Read more
"...It had developed this valve ticking on startup that would last about 10 minutes. I run only Mobil 1 synthetic oil at 5K change intervals...." Read more
"...Lifters are quiet and only getting better every day. I added the 12 oz to the fuel to help with my fuel injectors...." Read more
"...A year or so later it developed an occasional tapping noise that would come and go randomly...." Read more
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Top reviews
Top reviews from the United States
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Just kidding, however you can free up rusty bolts, add to fuel tank as additive, clean gunk off hands or anything really! I used it in my power steering unit on my boat instead of the highly priced alternative!
Overall, I suppose it may have some great properties when used as a fuel additive. I can't speak to any benefits when adding it to your oil (yet). I will use it in the next oil change and see if there are any improvements. I'll follow-up with an update after I have done that.
*UPDATE* 6/8/16
So, I am in need of another oil change and I have noticed some drastic changes since I first put this in. It's very clear to me that this product cleaned out some gunk in my engine. The results were not what I was expecting, instead of smoothing out my idle (which I think there has been some improvement there), it now burns off more oil. I am contributing that to the fact that it simply exposed the flaws in my seals. I don't mean this from a negative, destructive way, rather it cleaned it up so much that my failing seals are now actually failing instead of being gummed up. I now have some decisions to make as to how I'm going to fix the issue (some other fluid most likely). Until then, I believe I a done using Mystery Oil, although I am impressed with it's ability to clean out my engine. Actually quite pleased with the results, increased a star!
UPDATE** Went to firestone they said they noticed my egr was new and suggested that i get a fuel cleaning (It was installed a year ago* i told them no thanks then 3 weeks later my egr valve code popped up (Too much of a coincidence) .Frustrated i turned to Marvel Mystery Oil again in the gas tank close to needing a fill up and the code went away after a few days.
UPDATE** Once again my car tripped a Egr code P0404 9-20-15. Not remembering what the last code that tripped before i used MM i got irritated thinking id have to take it to a shop and spend a couple hundred bucks BUT I Turned to Marvel again before needing a fill up and drove the car a week and the code reset its self so im guessing again my egr got cluttered with carbon deposit and the marvel burnt it away.This stuff is really amazing (-_-)
Top reviews from other countries
Use as directed and you will see!