---
product_id: 1290602
title: "Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce"
brand: "royal purple"
price: "€ 42.53"
currency: EUR
in_stock: true
reviews_count: 13
category: "Royal Purple"
url: https://www.desertcart.hr/products/1290602-royal-purple-max-clean-fuel-system-cleaner-and-stabilizer-11722
store_origin: HR
region: Croatia
---

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

**Brand:** royal purple
**Price:** € 42.53
**Availability:** ✅ In Stock

## Summary

> ⛽ Clean fuel, cleaner ride, smarter you.

## 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?** € 42.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/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 on Demand:** Feel the 2.6% horsepower surge with every drive
- • **Universal Compatibility:** Works seamlessly with gasoline, diesel, ethanol blends & biofuels—fit for all your rides
- • **Eco-Friendly Performance:** Slash hydrocarbon, NOx & CO emissions by up to 18%—drive cleaner, drive smarter
- • **Fuel Economy Game-Changer:** Unlock an average 3.2% MPG increase and save at the pump
- • **Triple-Action Power Boost:** Cleans injectors, valves & combustion chambers for peak engine health

## Overview

Royal Purple Max-Clean Fuel System Cleaner and Stabilizer is a premium 3-in-1 additive designed to restore and enhance engine performance by cleaning fuel injectors, carburetors, intake valves, and combustion chambers. It improves fuel economy by an average of 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 go-to choice for professionals seeking efficient, eco-conscious vehicle maintenance.

## 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: Fuel system additive/cleaner - I did not look at any of the inside items like the top of the pistons or the valve stems or anything like that but as far as performance, my vehicle which is a 17 suburban 1500 I got better gas mileage, and the engine certainly ran cleaner than it was. Hope some find this review helpful. I also use royal purple oil in several of my vehicles. I certainly like the brand. The product comes with an attachable fill tube, which makes getting it in the fuel tank a lot easier. Note: the deeper your fuel system inlet is the better off you’ll be so you don’t spill.

## 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 | #1,435 in Automotive ( See Top 100 in Automotive ) #9 in Fuel System Cleaners |
| Brand | Royal Purple |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,904) |
| 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

![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.

## 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

### ⭐⭐⭐⭐⭐ Fuel system additive/cleaner
*by J***K on March 3, 2026*

I did not look at any of the inside items like the top of the pistons or the valve stems or anything like that but as far as performance, my vehicle which is a 17 suburban 1500 I got better gas mileage, and the engine certainly ran cleaner than it was. Hope some find this review helpful. I also use royal purple oil in several of my vehicles. I certainly like the brand. The product comes with an attachable fill tube, which makes getting it in the fuel tank a lot easier. Note: the deeper your fuel system inlet is the better off you’ll be so you don’t spill.

### ⭐⭐⭐⭐⭐ It flippin WORKS
*by C***D on March 2, 2026*

first time user on 2004 jeep, generac generator, Chain saws, pole saws worked on all smooth ides no pulsating extremely pleased

## 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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**Shop now:** [https://www.desertcart.hr/products/1290602-royal-purple-max-clean-fuel-system-cleaner-and-stabilizer-11722](https://www.desertcart.hr/products/1290602-royal-purple-max-clean-fuel-system-cleaner-and-stabilizer-11722)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-12*