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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 889 reviews
Condition: New
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$25.94 Why this price?
Save $4.82 was $30.76

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  • – 4-month term
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, Jun 19
Order within 22 hours and 6 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 ‏ : ‎ 11722


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, Jun 19

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

    • Price
Helps keep engine running smoothly
Reviewed in the United States on March 25, 2025 by Angel
    • I use the product
Great product
Reviewed in the United States on March 17, 2025 by marinell i.
    • 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.
    • 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
    • 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
    • WOW highly recommend
My 2006 Pontiac G6 with 180000 was not idling very well and started poorly. I added this product along with replacing my sparkplugs (which only had 30000 on them) and it did not take long for me to notice that the poor idling and poor starting issues went away. I went from 25.8 mpg to 27.3 mpg and get this, most of my driving is of the short trip into town variety. I mean WOW what a difference. I'll take it and highly recommend using this product. ... show more
Reviewed in the United States on June 22, 2024 by Brandon England
    • Rejuvenated my 7.3 Diesel
I have a 2002 Ford F250 with a 7.3L diesel. Truck has 140,000 miles on it. I noticed that my mileage was starting to get worse and I had a tapping sound coming from an injector. A friend of mine suggested this product. I added two bottles to a full tank of fuel and ran it. Like night and day difference. Smoother throttle response, more power, better driveability, and the injector tapping sound is gone. I can't believe how well this worked. Am sure my mileage is up as the truck is driving so much better. Went ahead and put this product on subscribe and save and will use this as regular maintenance on both my 7.3 and my 6.7. Worth every penny. ... show more
Reviewed in the United States on October 17, 2023 by Scott The Wolf Tamer
    • 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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