--- product_id: 296199444 title: "MM12R - 16 Fl Oz. (Pack of 2)" brand: "marvel mystery oil" price: "1339 DH" currency: MAD in_stock: true reviews_count: 5 category: "Marvel Mystery Oil" url: https://www.desertcart.ma/products/296199444-mm12r-16-fl-oz-pack-of-2 store_origin: MA region: Morocco --- # Cleans fuel injectors & carburetors Prevents valve sticking & clatter Protects oil from extreme temps MM12R - 16 Fl Oz. (Pack of 2) **Brand:** marvel mystery oil **Price:** 1339 DH **Availability:** ✅ In Stock ## Summary > 🚗 Unlock peak engine performance & fuel savings with every drop! ## Quick Answers - **What is this?** MM12R - 16 Fl Oz. (Pack of 2) by marvel mystery oil - **How much does it cost?** 1339 DH with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ma](https://www.desertcart.ma/products/296199444-mm12r-16-fl-oz-pack-of-2) ## Best For - marvel mystery oil enthusiasts ## Why This Product - Trusted marvel mystery oil brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Temperature Shield:** Prevents oil breakdown even under extreme heat or cold - • **Dual 16oz Power Pack:** Two bottles to keep your engine performing longer - • **Fuel Economy Booster:** Enhances MPG by optimizing fuel combustion - • **Universal Fit for Cars:** Compatible with all vehicle types for hassle-free maintenance - • **Engine Detox & Lubrication:** Cleans internal parts while reducing friction for smoother rides ## Overview Marvel Mystery Oil MM12R is a dual 16oz pack of premium oil and fuel additive designed to clean fuel injectors and carburetors, prevent valve sticking, reduce varnish buildup, and protect engine oil from extreme temperatures. Trusted by thousands, it improves fuel economy, smooths engine operation, and extends engine life across all car types. ## Description Marvel Mystery Oil helps unleash maximum power and performance while extending engine life. The original oil enhancer AND fuel treatment cleans the engine from the inside out, increases fuel economy, and protects against temperature extremes. Regularly use Marvel in your oil and fuel for a smoother, quieter engine. Review: Pour le moment impossible de vérifier efficacité, un galon = 4.8 litre . Manque 4 litres Review: Been using this product for years now. Great especially as a fuel additive for cleaning carbon deposits from cylinder walls. ## Features - Kit Includes (2) 16oz. Bottles of Marvel Mystery Oil additive - Cleans and lubricates fuel injectors and carburetors - Reduces and prevents varnish and gum build-up - Prevents valve sticking and clatter - Prevents oil breakdown caused by extreme temperatures ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0725JQXKS | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | #20,024 in Automotive ( See Top 100 in Automotive ) #135 in Oil & Fluid Additives | | Brand | Marvel Mystery Oil | | Brand Name | Marvel Mystery Oil | | Compatible with Vehicle Type | Car | | Container Type | Bottle | | Customer Reviews | 4.8 out of 5 stars 1,385 Reviews | | Global Trade Identification Number | 00074660507216 | | Included Components | 2 bottles of MM12R 16oz. Marvel Mystery Oil | | Item Weight | 0.01 Ounces | | Liquid Volume | 32 Fluid Ounces | | Liquid volume | 32 Fluid Ounces | | Manufacturer | Marvel Mystery Oil | | Manufacturer Part Number | 50721 | | Package information | Bottle | | UPC | 077874507218 074660507216 | | Unit Count | 32.0 Milliliters | | Vehicle service type | Car | ## Product Details - **Brand:** Marvel Mystery Oil - **Liquid volume:** 32 Fluid Ounces - **Package information:** Bottle - **Vehicle service type:** Car - **UPC:** 077874507218 074660507216 ## Images ![MM12R - 16 Fl Oz. (Pack of 2) - Image 1](https://m.media-amazon.com/images/I/71gLqm5K+3L.jpg) ## Questions & Answers **Q: Can anyone compare this mmo to royal purple injector cleaner?** A: I will have to get back to u on that as I just bought this but I used the royal purple last and run rp oil in engine too! **Q: Sir my car need 4.5 quarts of oil, can put 1 Quartes of Mystery oil and 3,5 of oil ?** A: Yes, according to the label you should add a quart of this oil. Follow there directions and you should be able good. **Q: How to clean up a spill? A container of this product fell and spilled in my garage. How should a spill be cleaned up please!** A: Wipe it up as much as you can and use a degreaser. It should clean up easier than motor oil. **Q: can i use this 2004 volvo s60** A: You can use this great product in Every vehicle Any year , gasoline. Diesel too I believe. Use @ 6 ounces per 20 Gallons fuel for Perfect portection! ## Customer Reviews ### ⭐⭐⭐ Review *by M***I on 5 December 2025* Pour le moment impossible de vérifier efficacité, un galon = 4.8 litre . Manque 4 litres ### ⭐⭐⭐⭐⭐ Review *by C***E on 28 February 2026* Been using this product for years now. Great especially as a fuel additive for cleaning carbon deposits from cylinder walls. ### ⭐⭐⭐⭐⭐ Review *by G***N on 26 April 2019* I've always wondered about Marvel Mystery Oil as I've seen reviews along with various YouTube videos about the benefits of this product. So I decided to give it a try. Make sure you follow the instructions on the label for the application your using it for! It doesn't take a lot, whether adding to your oil or your gas First I put some in my gas tank at the recommended amount (4 oz per 10 gallons). Most people do this 2 to 3 times to get the full benefits of the product. So a 16 oz bottle of Marvel Mystery Oil would treat 40 gallons of gas. It has improved the performance of my 2011 KIA Sorento 4 cylinder after using on 40 gallons and I'm going to change the spark plugs now. On my significant others 2002 Toyota SR5 4runner, we've had issues with 3 of the idiot lights always staying on, which I've read could be the O2 sensors. On the 3rd application (I used a bottle, 4 oz per 10 gallons, 4 times in a row) those lights went off and have stayed off for 3 months now! Did it clean out the O2 sensors? I'm going to say yes because they have been on for a full year! Then I added some to my KIA's 4 cylinder oil. You can add or replace 20% of your oil so if you use 5 quarts of oil, you could replace 1 quart of oil with Marvel Mystery Oil. I had changed my oil around 3,000 miles ago with full synthetic Castrol Edge along with using a high dollar synthetic oil filter. This synthetic oil has been so "clean and clear" that it was difficult to read the level on the dipstick. But it was like a 1/2 quart low. So I added 10 oz directly to the motor. 200 miles later, the oil went from almost being clear to black!! So it definitely was cleaning something. I drove it 300 more miles and then changed the oil and filter. I had read that you should add this product like 500 miles before your scheduled oil change and now I see why! My KIA is purring like a kitten and I'm getting 3 more miles per gallon on the highway (78 on the interstate). Finally, I had added some (4 oz) to a 1 gallon gas container for my lawn mower and the some to the 1 gallon mixture of gas/oil for my old Toro snowblower. The snowblower had been running rough and occasionally dying on me. By the 2nd time I refilled the Toro's gas tank, that 25 year old Toro was once again running like it did when I got it new! I'm serious here! Then this Spring (right now), it naturally was added to the lawn mower. I just got done mowing the yard for the 2nd time this year and it uses 1 tank of gas to get the entire yard done. When I went to start it up, it started on the first pull as usual. But a HUGE gray smoke cloud came out of the exhaust! And it's never done that before. But it's purring like a kitten too! I'm no mechanic but am rather handy. Just installed a new capacitor on the outside air conditioner as it wasn't cooling. And it solved the issue. Marvel Mystery Oil says it improves compression, power, & MPG, along with lubricating upper cylinder for smoother idling along with keeping engines clean from sludge. Based off my results or experiences. I would have to agree 100%. I'll keep adding a little to the gas now & then. But if I add to the oil, I will only due that like 200 miles before the next oil change. I recommend trying!!! ## Frequently Bought Together - Marvel Mystery Oil MM12R - 16 Fl Oz. (Pack of 2) - Sea Foam Motor Treatment Fuel & Oil Additive, SF16, 16 oz, Pack of 3 - STA-BIL Storage Fuel Stabilizer | Keeps Fuel Fresh for 24 Months, Prevents Corrosion, Gasoline Treatment Fuel Additive that Protects Fuel System, Gas Stabilizer for Fuel Storage, 32 oz. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ma/products/296199444-mm12r-16-fl-oz-pack-of-2](https://www.desertcart.ma/products/296199444-mm12r-16-fl-oz-pack-of-2) --- *Product available on Desertcart Morocco* *Store origin: MA* *Last updated: 2026-04-26*