---
product_id: 15025849
title: "Royal Purple 11723-6PK Max-Clean Fuel System Cleaner and Stabilizer - 20 oz. (Case of 6)"
brand: "royal purple"
price: "₩256308"
currency: KRW
in_stock: true
reviews_count: 8
category: "Royal Purple"
url: https://www.desertcart.kr/products/15025849-royal-purple-11723-6pk-max-clean-fuel-system-cleaner-stabilizer
store_origin: KR
region: South Korea
---

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

**Brand:** royal purple
**Price:** ₩256308
**Availability:** ✅ In Stock

## Summary

> 🚗 Maximize your drive, minimize your emissions!

## Quick Answers

- **What is this?** Royal Purple 11723-6PK Max-Clean Fuel System Cleaner and Stabilizer - 20 oz. (Case of 6) by royal purple
- **How much does it cost?** ₩256308 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/15025849-royal-purple-11723-6pk-max-clean-fuel-system-cleaner-stabilizer)

## 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

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: 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: One of the best fuel system cleaners - This might be the best of the three top fuel system cleaners I use: Royal Purple made an almost instant improvement in fuel economy and acceleration in two of my vehicles, one an 18 year-old mini-van with nearly 200K miles and the other a newer CUV with almost 100K miles with a turbo. I also use BG44K and Chevron Techron. I always read and was told that Chevron was the "gold standard" in fuel system/fuel injector cleaners, but now I'm not so sure.

## 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

![Royal Purple 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

### ⭐⭐⭐⭐⭐ 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

### ⭐⭐⭐⭐⭐ One of the best fuel system cleaners
*by B***O on February 16, 2026*

This might be the best of the three top fuel system cleaners I use: Royal Purple made an almost instant improvement in fuel economy and acceleration in two of my vehicles, one an 18 year-old mini-van with nearly 200K miles and the other a newer CUV with almost 100K miles with a turbo. I also use BG44K and Chevron Techron. I always read and was told that Chevron was the "gold standard" in fuel system/fuel injector cleaners, but now I'm not so sure.

### ⭐⭐⭐⭐⭐ Does the job!
*by M***P on February 19, 2026*

Not much to say. Works as expected!

## 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.kr/products/15025849-royal-purple-11723-6pk-max-clean-fuel-system-cleaner-stabilizer](https://www.desertcart.kr/products/15025849-royal-purple-11723-6pk-max-clean-fuel-system-cleaner-stabilizer)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-26*