--- product_id: 1290602 title: "Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce" brand: "royal purple" price: "¥4349" currency: JPY in_stock: true category: "Royal Purple" url: https://www.desertcart.jp/products/1290602-royal-purple-max-clean-fuel-system-cleaner-and-stabilizer-11722 store_origin: JP region: Japan --- # Boosts fuel economy +3.2% 3-in-1 fuel additive tech Increases horsepower +2.6% Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce **Brand:** royal purple **Price:** ¥4349 **Availability:** ✅ In Stock ## Summary > ⛽ Maximize your ride’s potential—clean, power up, and lead the pack! ## Quick Answers - **What is this?** Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce by royal purple - **How much does it cost?** ¥4349 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/1290602-royal-purple-max-clean-fuel-system-cleaner-and-stabilizer-11722) ## Best For - royal purple enthusiasts ## Why This Product - Trusted royal purple brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Horsepower Upgrade:** Feel the 2.6% horsepower gain that puts you ahead on the road - • **Fuel Economy Booster:** Save an average of 3.2% on every gallon—drive smarter, not harder - • **Eco-Friendly Performance:** Cuts emissions by up to 18%—because green is the new black - • **Triple-Action Fuel Power:** Cleans injectors, valves & chambers for peak engine health - • **Universal Engine Compatibility:** Works seamlessly with gasoline, diesel, ethanol blends & biofuels ## Overview Royal Purple Max-Clean is a premium 3-in-1 fuel system cleaner and stabilizer that enhances engine performance by cleaning fuel injectors, carburetors, intake valves, and combustion chambers. It improves fuel economy by 3.2%, increases horsepower by 2.6%, and reduces harmful emissions significantly. Compatible with gasoline and diesel engines, including ethanol blends and biofuels, Max-Clean is EPA and CARB compliant, making it the smart choice for eco-conscious drivers seeking peak vehicle efficiency. ## Description Royal Purple Max-Clean is a state-of-the-art high performance fuel system cleaner that maximizes the performance of your fuel system. Max-Clean restores fuel economy by deeply penetrating deposits and cleaning injectors, carburetors, intake valves and combustion chambers. Royal Purple Max-Clean is EPA / CARB Compliant. Recommended for use in gasoline and diesel engines and can be used with all ethanol blends or biofuel. Max-Clean can be used in both 4-cycle & 2-cycle engines and will not harm vehicle emissions equipment. ## Features - 3-in-1 fuel additive keeps new engines clean and improves vehicle's performance - Improves fuel economy an average of 3.2 percent - Increases horsepower an average of 2.6 percent - Reduces hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively) - Fit type: Vehicle Specific ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00B1VBQRS | | Best Sellers Rank | #1,002 in Automotive ( See Top 100 in Automotive ) #8 in Fuel System Cleaners | | Brand Name | Royal Purple | | Contains Liquid Contents? | Yes | | Customer Reviews | 4.7 4.7 out of 5 stars (3,189) | | Global Trade Identification Number | 00641330117220 | | Included Components | Per Item Description | | Item Type Name | Fuel System Cleand and Stabilizer | | Item Weight | 1.25 Pounds | | Manufacturer | Royal Purple | | Model Number | 11722 | | Number of Items | 1 | | Part Interchange Info | 11722 | | Part Number | 11722 | | Size | 1 Count (Pack of 1) | | UPC | 641330117220 | | Unit Count | 1.0 Count | | Warranty Description | 30 Days | ## Product Details - **Brand:** Royal Purple - **Contains Liquid Contents:** Yes - **Item Weight:** 1.25 Pounds - **Number of Items:** 1 - **Unit Count:** 1.0 Count ## Images ![Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce - Image 1](https://m.media-amazon.com/images/I/7178Kyc-yJL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: my tank holds 33 gallons, would i have to fill it up only will 20 gallons after i pour in Max Clean or could i fill right up?** A: Put in a bottle & fill your tank 3/4 of the way up. That way you get the improved performance, but only have to buy one bottle. That's what I do as I have a 26 gallon tank. **Q: How to use this ? Can I just put this to the fuel tank ?** A: Dump it in the fuel tank and fill it up with gas. This large can will treat up to 20 Gallons. I use it in my motorcycle, so I just put a small amount in. It also has a fuel stabilizer in it which is good cause I don't ride the bike that often. **Q: Does this work in small gas engines?** A: What do u mean by small gas engines? Im running a 1500cc engine and works well with it. Is this small enough? **Q: Does MaxClean come with the application funnel for capless fuel tanks like some of their other products?** A: It does come with a plastic funnel that attaches to the bottle. Depends what fuel your vehicle takes if it will work or not if it's a caplesss filler neck vehicle tho. ## Frequently Bought Together - Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce - Royal Purple 18000 Max Atomizer Fuel Injector Cleaner, 6 fl. oz. - Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive - 12 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.jp/products/1290602-royal-purple-max-clean-fuel-system-cleaner-and-stabilizer-11722](https://www.desertcart.jp/products/1290602-royal-purple-max-clean-fuel-system-cleaner-and-stabilizer-11722) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-06*