---
product_id: 1290602
title: "Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce"
brand: "royal purple"
price: "€ 30.97"
currency: EUR
in_stock: true
reviews_count: 13
category: "Royal Purple"
url: https://www.desertcart.nl/products/1290602-max-clean-fuel-system-cleaner-and-stabilizer-11722-20-ounce
store_origin: NL
region: Netherlands
---

# 3.2% avg fuel economy boost Up to 18% emission reduction 2.6% avg horsepower gain Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce

**Brand:** royal purple
**Price:** € 30.97
**Availability:** ✅ In Stock

## Summary

> ⛽ Clean fuel, cleaner ride, smarter drive.

## Quick Answers

- **What is this?** Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce by royal purple
- **How much does it cost?** € 30.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/1290602-max-clean-fuel-system-cleaner-and-stabilizer-11722-20-ounce)

## 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 on Demand:** Unlock an average 2.6% horsepower increase for smoother, stronger rides
- • **Eco-Friendly Performance:** Slash hydrocarbon, NOx, and CO emissions by up to 18%—drive cleaner, drive proud
- • **Triple-Action Power Boost:** Cleans injectors, valves & combustion chambers for peak engine health
- • **Fuel Efficiency Game-Changer:** Restore and improve MPG by an average of 3.2%—save more on every drive
- • **Universal Engine Compatibility:** Works seamlessly with gasoline, diesel, ethanol blends & biofuels—future-proof your fuel system

## Overview

Royal Purple Max-Clean Fuel System Cleaner and Stabilizer is a premium 3-in-1 additive designed to deeply clean fuel injectors, carburetors, intake valves, and combustion chambers. It improves fuel economy by 3.2%, increases horsepower by 2.6%, and reduces harmful emissions by up to 18%. Compatible with gasoline and diesel engines, including ethanol blends and biofuels, Max-Clean is EPA and CARB compliant, ensuring top-tier performance and environmental responsibility.

## 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.

Review: GREAT PRODUCT - WORKS GREAT, I PUT IT IN WITH 1/42TANK LEFT DROVE IT AROUND TILL 1/4 TANK FILLED IT UP GAINED 2 MPG
Review: Very good Fuel treatment for cleaning your car’s valves, fuel injectors etc. from carbon buildup. - Excellent fuel treatment to clean carbon buildup off the Valves and Cylinder heads. Highly recommended by professionals in video comparisons. This won 2nd place but does almost as well as the 1st place product that required several steps. I am happy with it. Made my 2024 Honda CR-V and wife’s 2013 Honda Accord run and idle better. Son also claimed his 2019 Ford Fusion was helped also.

## 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 | #800 in Automotive ( See Top 100 in Automotive ) #7 in Fuel System Cleaners |
| Brand | Royal Purple |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,840) |
| Date First Available | January 16, 2013 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.25 pounds |
| Item model number | 11722 |
| Manufacturer | Royal Purple |
| Manufacturer Part Number | 11722 |
| Model | 11722 |
| OEM Part Number | 11722 |
| Product Dimensions | 2.63 x 2.63 x 9.73 inches |

## Images

![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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ GREAT PRODUCT
*by M***U on January 18, 2026*

WORKS GREAT, I PUT IT IN WITH 1/42TANK LEFT DROVE IT AROUND TILL 1/4 TANK FILLED IT UP GAINED 2 MPG

### ⭐⭐⭐⭐⭐ Very good Fuel treatment for cleaning your car’s valves, fuel injectors etc. from carbon buildup.
*by G***. on November 20, 2025*

Excellent fuel treatment to clean carbon buildup off the Valves and Cylinder heads. Highly recommended by professionals in video comparisons. This won 2nd place but does almost as well as the 1st place product that required several steps. I am happy with it. Made my 2024 Honda CR-V and wife’s 2013 Honda Accord run and idle better. Son also claimed his 2019 Ford Fusion was helped also.

### ⭐⭐⭐⭐⭐ Car ran smoother
*by A***R on November 23, 2025*

I seems to work very well. I tried it out and noticed immediate results. The car appeared to accelerate and run at much smoother intervals.

## 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.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-13*