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

5.0 (18) Write Review
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$30.78

$ 13 .99 $13.99

In Stock

About this item

  • 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


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.


Gary D.Van Rossen Jr.
Reviewed in the United States on February 24, 2025
THIS IS A MUST IF YOU HAVE A LOT OF MILES ESPECIALLY IN CA.
Gary D.Van Rossen Jr.
Reviewed in the United States on February 24, 2025
THIS IS A MUST IF YOU HAVE A LOT OF MILES ESPECIALLY IN CA.
John Walstrom
Reviewed in the United States on January 29, 2025
Used this in all of my vehicles will buy more and probably add it to my maintenance program
John Walstrom
Reviewed in the United States on January 29, 2025
Used this in all of my vehicles will buy more and probably add it to my maintenance program
Tom
Reviewed in the United States on February 22, 2024
I buy it all the time. Great for keeping the fuel system clean and gasoline stabilized. Car and small engines too.
Tom
Reviewed in the United States on February 22, 2024
I buy it all the time. Great for keeping the fuel system clean and gasoline stabilized. Car and small engines too.
Hraq
Reviewed in the United States on June 4, 2023
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!
Hraq
Reviewed in the United States on June 4, 2023
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!
Scott The Wolf Tamer
Reviewed in the United States on October 17, 2023
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.
Scott The Wolf Tamer
Reviewed in the United States on October 17, 2023
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.
Lisa Flores
Reviewed in the United States on September 9, 2022
If you are unsure of this product, look up Scotty Kilmer on yoootube....he recommends it. And he is very honest and debunks many products, but not this one. I had problems with hard acceleration. Hesitatation, turbo was ineffective...it was misfiring, and I felt it could be major or minor but it was going to cost $ to fix. 1 can, 30 minutes later, turbo is smooth, acceleration strong, up to redline, power is back. Dirty, clogged injectors were the issue.
Lisa Flores
Reviewed in the United States on September 9, 2022
If you are unsure of this product, look up Scotty Kilmer on yoootube....he recommends it. And he is very honest and debunks many products, but not this one. I had problems with hard acceleration. Hesitatation, turbo was ineffective...it was misfiring, and I felt it could be major or minor but it was going to cost $ to fix. 1 can, 30 minutes later, turbo is smooth, acceleration strong, up to redline, power is back. Dirty, clogged injectors were the issue.
scott
Reviewed in the United States on June 25, 2022
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
scott
Reviewed in the United States on June 25, 2022
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
Tim
Reviewed in the United States on November 5, 2022
I use this for winter storage, and it does keep the gas from going stale during that time.
Tim
Reviewed in the United States on November 5, 2022
I use this for winter storage, and it does keep the gas from going stale during that time.
Jason Yeo
Reviewed in Singapore on May 27, 2020
Item received in good order except for a slight dent near the cap. First time trying out this product after watching the good review from YouTube.
Jason Yeo
Reviewed in Singapore on May 27, 2020
Item received in good order except for a slight dent near the cap. First time trying out this product after watching the good review from YouTube.