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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 847 reviews
Condition: New
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$30.16 Why this price?

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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

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: In Stock.
Fulfilled by Amazon
Arrives Saturday, Dec 28
Order within 4 hours and 46 minutes
Available payment plans shown during checkout

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: Saturday, Dec 28

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

    • 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
    • Works fast
I put this in and within a hour it cleaned out carb on my quad and it ran great same with truck could tell the difference within a couple hours
Reviewed in the United States on February 13, 2024 by Ralph VanDerMei
    • Excellent
Excellent
Reviewed in the United States on October 25, 2024 by cody
    • 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
    • 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
    • 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
    • Nice product
Had a chk engine light on. Had to do with idle. Two cans in two fill ups. Chk engine light is off..
Reviewed in the United States on April 26, 2024 by Ronald Drake
    • 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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