---
product_id: 737760946
title: "Royal Purple MAX-CLEAN Fuel Additive 20.1 fl oz (591 ml)"
brand: "royal purple"
price: "$80.53"
currency: USD
in_stock: true
reviews_count: 6
category: "Royal Purple"
url: https://www.desertcart.us/products/737760946-royal-purple-max-clean-fuel-additive-20-1-fl-oz
store_origin: US
region: United States of America
---

# Royal Purple MAX-CLEAN Fuel Additive 20.1 fl oz (591 ml)

**Brand:** royal purple
**Price:** $80.53
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Royal Purple MAX-CLEAN Fuel Additive 20.1 fl oz (591 ml) by royal purple
- **How much does it cost?** $80.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/737760946-royal-purple-max-clean-fuel-additive-20-1-fl-oz)

## 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

## Description

Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 20oz 11722

Review: 息つぎが改善され吹け上がりが良くなった。 アイドリングが少し安定してる。 キャブ車におすすめです♪
Review: Es el producto tal cual lo solicité, aunque tardo un poco en llegar, el Royal Purple Max Clean me satisface tenerlo, ahora a probarlo.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00B1VBQRS |
| Amazon Bestseller | #188,919 in Automotive ( See Top 100 in Automotive ) #105 in Fuel Additives #9,526 in Automotive Tools & Equipment |
| Brand Name | Royal Purple |
| Contains Liquid Contents? | Yes |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,641) |
| Global Trade Identification Number | 00641330117220 |
| Included Components | Maximum Clean: 20 oz |
| Item Weight | 1.25 Pounds |
| Manufacturer | ROYAL PURPLE |
| Model Number | 11722 |
| Number of Items | 1 |
| Part Number | 11722 |
| Size | 20オンス |
| UPC | 641330117220 |

## Product Details

- **Brand:** Royal Purple
- **Contains Liquid Contents:** Yes
- **Global Trade Identification Number:** 00641330117220
- **Item Weight:** 1.25 Pounds
- **Manufacturer:** ROYAL PURPLE
- **Number of Items:** 1
- **Size:** 20オンス
- **UPC:** 641330117220

## Images

![Royal Purple MAX-CLEAN Fuel Additive 20.1 fl oz (591 ml) - Image 1](https://m.media-amazon.com/images/I/7178Kyc-yJL.jpg)
![Royal Purple MAX-CLEAN Fuel Additive 20.1 fl oz (591 ml) - Image 2](https://m.media-amazon.com/images/I/711r02FWmqL.jpg)
![Royal Purple MAX-CLEAN Fuel Additive 20.1 fl oz (591 ml) - Image 3](https://m.media-amazon.com/images/I/41JNMScCkTL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Review
*by 川***原 on October 27, 2024*

息つぎが改善され吹け上がりが良くなった。 アイドリングが少し安定してる。 キャブ車におすすめです♪

### ⭐⭐⭐⭐⭐ Review
*by R***Z on April 21, 2026*

Es el producto tal cual lo solicité, aunque tardo un poco en llegar, el Royal Purple Max Clean me satisface tenerlo, ahora a probarlo.

### ⭐⭐⭐⭐⭐ Review
*by S***H on September 28, 2025*

A+++ Great stuff. It has PEA which is what you need to clean your fuel injectors. It also has stabilizers to allow you to leave your car for months and still have viable gas when you return. A+++

## 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 United States of America*
*Store origin: US*
*Last updated: 2026-05-20*