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Royal Purple

Royal Purple 11722-2PK Max-Clean Fuel System Cleaner and Stabilizer - 20 oz. Bottle, (Pack of 2)

    • Based on 880 reviews
Condition: New
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$29.28 Why this price?
Save $16.88 was $46.16

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As low as $7 / mo
  • – 4-month term
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This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: Only 5 left in stock, order soon!
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Arrives Thursday, May 1
Order within 22 hours and 43 minutes
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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

Description

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.

Brand: Royal Purple


Item Form: Liquid


Scent: Unscented


Specific Uses For Product: Engine cleaner


Material Feature: Liquid


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 10 x 10 x 10 inches; 1.83 Pounds


Item model number ‏ : ‎ 8542066641


Date First Available ‏ : ‎ September 20, 2013


Manufacturer ‏ : ‎ Royal Purple


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • I use the product
Great product
Reviewed in the United States on March 17, 2025 by marinell i.
    • Price
Helps keep engine running smoothly
Reviewed in the United States on March 25, 2025 by Angel
    • Excellent product
This was recommended to me by YouTuber who said it is very good for the car. I said let me try it, then I felt it really cleaned the engine and got more milage per gallon. My car is old 2002 and that's why I give it some treats once in a while, so it can survive longer with me. I love this product!
Reviewed in the United States on June 4, 2023 by Hraq
    • Easy to use
I don't know if it really works. I used it to clean my fuel injection system on my car.
Reviewed in the United States on August 4, 2023 by Pam
    • GREAT PRICE
THIS IS A MUST IF YOU HAVE A LOT OF MILES ESPECIALLY IN CA.
Reviewed in the United States on February 24, 2025 by Gary D.Van Rossen Jr.
    • Affordable preventative maintenance
Used this in all of my vehicles will buy more and probably add it to my maintenance program
Reviewed in the United States on January 29, 2025 by John Walstrom
    • Amazon has the best price for a great product.
I buy it all the time. Great for keeping the fuel system clean and gasoline stabilized. Car and small engines too.
Reviewed in the United States on February 22, 2024 by Tom
    • Royal purple is the best kept secret of the ones who know
Review Image by scott scott
I run this every year on 2003 Dodge Durango RT . The truck has had issues from all systems for the last three years so I haven’t been able to take accurate tests and run the numbers while repairs were taking place . Last years numbers were hard to believe In June so I decided to wait till this year to be sure I spoke correctly. The numbers after running this last year while she was rebounding from major repairs weren’t wrong. I gained 40 miles on my cleaning tank . 10% gains and motor has never been smoother. All and all I got the can for free and saved 24 dollars on this fill up all the while cleaning my motor and fuel system pump to injector & out the cat . The product literally pays for itself and buys you gas in the process . The numbers royal purple posts are far below what it does for a badly dirty top half . Do yourself a favor and buy a can ... show more
Reviewed in the United States on June 25, 2022 by scott scott

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