--- product_id: 296199444 title: "MM12R - 16 Fl Oz. (Pack of 2)" brand: "marvel mystery oil" price: "€ 78.70" currency: EUR in_stock: true reviews_count: 5 category: "Marvel Mystery Oil" url: https://www.desertcart.pt/products/296199444-mm12r-16-fl-oz-pack-of-2 store_origin: PT region: Portugal --- # Boosts fuel economy & engine power Prevents oil breakdown at high temps Cleans & lubricates fuel systems MM12R - 16 Fl Oz. (Pack of 2) **Brand:** marvel mystery oil **Price:** € 78.70 **Availability:** ✅ In Stock ## Summary > ⚡ Unlock your engine’s hidden potential with Marvel Mystery Oil! ## Quick Answers - **What is this?** MM12R - 16 Fl Oz. (Pack of 2) by marvel mystery oil - **How much does it cost?** € 78.70 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/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 - • **Valve Guardian:** Prevents valve sticking and annoying engine clatter - • **Dual Power Pack:** Two 16oz bottles for extended engine care and maintenance - • **Engine Revitalizer:** Cleans fuel injectors and carburetors for peak performance - • **Temperature Shield:** Protects oil from breakdown even under extreme heat - • **Fuel Efficiency Booster:** Enhances fuel economy for longer drives and fewer stops ## Overview Marvel Mystery Oil MM12R is a universal-fit engine additive that cleans and lubricates fuel injectors and carburetors, prevents varnish and gum buildup, and protects against oil breakdown caused by extreme temperatures. Sold as a convenient 2-pack of 16oz bottles, it enhances fuel economy, reduces engine noise, and extends engine life—trusted by thousands with a 4.8-star rating. ## 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: Tres chers pour volume - Pour le moment impossible de vérifier efficacité, un galon = 4.8 litre . Manque 4 litres Review: A great product for the car - Every time I work on a motor, a little of this goes in. I find it helps keep the motor healthy and running properly. Also great when mixed with some ATF and diesel fuel to loosen up rusty motors. ## 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 | #43,681 in Automotive ( See Top 100 in Automotive ) #222 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 1,477 Reviews | | Flash Point | 73.9 Degrees Celsius | | Flash point | 73.9 Degrees Celsius | | 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 | | Model Number | 50721 | | Number of Packs | 2 | | Package information | Bottle | | Size | 16 oz. (2-Pack) | | UPC | 077874507218 074660507216 | | Unit Count | 32.0 Milliliters | | Vehicle service type | Car | ## Product Details - **Brand:** Marvel Mystery Oil - **Flash point:** 73.9 Degrees Celsius - **Liquid volume:** 32 Fluid Ounces - **Package information:** Bottle - **Vehicle service type:** Car ## 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 ### ⭐⭐⭐ Tres chers pour volume *by M***I on 5 December 2025* Pour le moment impossible de vérifier efficacité, un galon = 4.8 litre . Manque 4 litres ### ⭐⭐⭐⭐⭐ A great product for the car *by M***S on 1 September 2026* Every time I work on a motor, a little of this goes in. I find it helps keep the motor healthy and running properly. Also great when mixed with some ATF and diesel fuel to loosen up rusty motors. ### ⭐⭐⭐⭐⭐ Prima smering *by L***V on 10 July 2026* Werkt prima. Daardoor is de smering beter. ## 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.pt/products/296199444-mm12r-16-fl-oz-pack-of-2](https://www.desertcart.pt/products/296199444-mm12r-16-fl-oz-pack-of-2) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-11*