---
product_id: 15025849
title: "11723-6PK Max-Clean Fuel System Cleaner and Stabilizer - 20 oz. (Case of 6)"
brand: "royal purple"
price: "20636 Ft"
currency: HUF
in_stock: true
reviews_count: 8
url: https://www.desertcart.hu/products/15025849-11723-6pk-max-clean-fuel-system-cleaner-and-stabilizer-20
store_origin: HU
region: Hungary
---

# Boosts horsepower +2.6% Improves fuel economy +3.2% Cuts emissions up to 18% 11723-6PK Max-Clean Fuel System Cleaner and Stabilizer - 20 oz. (Case of 6)

**Brand:** royal purple
**Price:** 20636 Ft
**Availability:** ✅ In Stock

## Summary

> 🚗 Maximize your drive, minimize your emissions!

## Quick Answers

- **What is this?** 11723-6PK Max-Clean Fuel System Cleaner and Stabilizer - 20 oz. (Case of 6) by royal purple
- **How much does it cost?** 20636 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/15025849-11723-6pk-max-clean-fuel-system-cleaner-and-stabilizer-20)

## 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

- • **Eco-Smart Drive:** Reduce harmful emissions—because your ride should be green too
- • **Smooth Operator:** Say goodbye to rough idles, hesitation, and stalling for good
- • **Performance Edge:** Feel the difference with a 2.6% horsepower increase
- • **Triple-Action Power:** Clean, stabilize, and optimize your engine in one bottle
- • **Fuel Efficiency Upgrade:** Save more on every mile with a 3.2% average fuel economy boost

## Overview

Royal Purple Max-Clean is a premium 3-in-1 fuel system cleaner and stabilizer that enhances engine performance by increasing horsepower by 2.6%, improving fuel economy by 3.2%, and reducing harmful emissions by up to 18%. Designed to keep engines running smoothly, it prevents rough idling, hesitation, and stalling, making it an essential upgrade for any vehicle owner seeking efficiency and reliability.

## Description

desertcart.com Max-Clean is a state-of-the-art high performance synthetic fuel system cleaner that maximizes the performance of your fuel system. Max-Clean restores fuel economy and deeply penetrates and cleans injectors, carburetors, intake valves and combustion chambers. Before and after effects of using Max-Clean Performance AdvantagesMultiple product fleet tests were conducted on various makes and models of vehicles. Royal Purple found that after as little as one treatment Max-Clean performance advantages are:Average fuel economy improvement 3.2% (up to 6%)Average restored horsepower 2.6% (up to 5%)Average octane requirement reduction 1.2% (up to 5%)Average hydrocarbon emissions reductions 12% (up to 44%)Prevent rough idle, hesitation and stallingPrevent premature spark plug foulingReduce deposit-related engine knocking and pingingStabilizes fuel during off-season and storageSuperior corrosion and oxidation inhibitorCompliance and SafetyRoyal Purple’s Max-Clean is EPA/CARB Compliant. It's safe 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 and 2-cycle engines and will not harm vehicle emissions equipment.Recommended Treat RatePour entire contents of can into a nearly empty tank and refuel. One (1) can treats 15 to 20 gallons. For tank sizes outside of this range, use one (1) ounce per gallon. In two-cycle engines, use one (1) ounce per two (2) gallons. Product Description Max-Clean is a state-of-the-art fuel system treatment that cleans injectors, restores fuel economy and reduces both engine buildup and tailpipe emissions. Max-Clean’s proprietary technology targets both the intake system and combustion chamber and is effective on the entire spectrum of engines on the road, whether they are new or old, gasoline or diesel, naturally aspirated, turbocharged or supercharged. After multiple product fleet tests were conducted on various makes and models of vehicles, Royal Purple found that after, as little as one Max-Clean treatment can improve fuel economy an average of 3.2 percent and increase horsepower an average of 2.6 percent. Reduces Hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively). Prevents rough idle, hesitation and stalling. Prevents premature spark plug fouling. Reduces deposit-related engine knocking and pinging. Deposit build-up is a natural consequence of fuel combustion, unfortunately these deposits can have a significant effect on the performance and reliability of your engine. With Max-Clean, Royal Purple has developed a product that in most cases can bring engine surfaces back to like-new clean, restoring once-lost fuel economy and performance.

Review: Fixed engine shutter - It takes the engine shutter out of my 2018 3.5 echoboost. Seems to work great so far and adds a little bit of mpg also
Review: Great fuel cleaner! - Great fuel injector cleaner. Royal purple is the best product you can use on your vehicle.

## 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)
- Prevents rough idle, hesitation and stalling

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Royal Purple |
| Brand | Royal Purple |
| Model | 11723-6PK |
| Item Weight | 7.86 pounds |
| Product Dimensions | 5.5 x 8.25 x 9 inches |
| Item model number | 11722 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 11723-6PK |
| OEM Part Number | 11723 |

## Images

![11723-6PK Max-Clean Fuel System Cleaner and Stabilizer - 20 oz. (Case of 6) - Image 1](https://m.media-amazon.com/images/I/61DwZzQT-KL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fixed engine shutter
*by J***N on November 14, 2025*

It takes the engine shutter out of my 2018 3.5 echoboost. Seems to work great so far and adds a little bit of mpg also

### ⭐⭐⭐⭐⭐ Great fuel cleaner!
*by M***A on December 8, 2025*

Great fuel injector cleaner. Royal purple is the best product you can use on your vehicle.

### ⭐⭐⭐⭐⭐ 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 11723-6PK Max-Clean Fuel System Cleaner and Stabilizer - 20 oz. (Case of 6)
- Royal Purple 18000 Max Atomizer Fuel Injector Cleaner - 6 oz. (10)
- Royal Purple 11757 Max Boost Octane Boost Case, 16 fl. oz (6 Pack)

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**Shop now:** [https://www.desertcart.hu/products/15025849-11723-6pk-max-clean-fuel-system-cleaner-and-stabilizer-20](https://www.desertcart.hu/products/15025849-11723-6pk-max-clean-fuel-system-cleaner-and-stabilizer-20)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-01*