$13.97

FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime

In Stock.

Ships from and sold by Amazon.com.

Add gift options

Other Sellers on Amazon

Add to Cart

$16.99
+ Free Shipping

Sold by: Truck Performance Pros

Add to Cart

$17.35
+ Free Shipping

Sold by: BAP0006

Add to Cart

$18.39
+ Free Shipping

Sold by: Autolow

Have one to sell? Sell on Amazon

Image Unavailable

Image not available for
Color:

Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722

by Royal Purple

892 ratings

| 147 answered questions

List Price:	$17.67
Price:	$13.97 FREE Shipping Get free shipping Free 4-5 day shipping within the U.S. when you order $25.00 of eligible items sold or fulfilled by Amazon. Or get 3 day shipping on this item for $5.99 . (Prices may vary for AK and HI.) Learn more about free shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime
You Save:	$3.70 (21%)

Size: 20 Ounce

This fits your .

Make sure this fits by entering your model number.

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

› See more product details

Frequently bought together

Total price: $32.10

Buy the selected items together

This item:Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 $13.97
In Stock.
Ships from and sold by Amazon.com.
FREE Shipping on orders over $25. Details
Royal Purple 18000 Max Atomizer Fuel Injector Cleaner - 6 oz. $7.49
In Stock.
Ships from and sold by Amazon.com.
FREE Shipping on orders over $25. Details
Royal Purple ROY01600 PURPLE ICE SUPER COOLANT, 12 oz, 1 Pack $10.64
In Stock.
Ships from and sold by Amazon.com.
FREE Shipping on orders over $25. Details

What other items do customers buy after viewing this item?

Customers who viewed this item also viewed

Page 1 of 1 Start overPage 1 of 1

This shopping feature will continue to load items when the Enter key is pressed. In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading.

Compare with similar items

		Red Line (60103) Complete SI-1 Fuel System Cleaner Gas and Injector Additive Treatment-15 oz Bottle	Chevron Techron Concentrate Plus Fuel System Cleaner - 20 oz.	Lucas Oil 10512 Deep Clean Fuel System Cleaner - 16 oz.	Chevron Techron Fuel Injection Cleaner - 12 oz. - 10055	Royal Purple 11722 Max Clean Fuel Synthetic Cleaner-20 Oz, 6 pack

Customer Rating	(876)	(1163)	(1938)	(221)	(192)	(4)
Price	$13.97	$13.26	$11.59	$8.97	$4.47	$83.06
Shipping	FREE Shipping on orders over $25	FREE Shipping on orders over $25	FREE Shipping on orders over $25	FREE Shipping on orders over $25	FREE Shipping on orders over $25	FREE Shipping on orders over $25
Sold By	Amazon.com	Amazon.com	Amazon.com	Amazon.com	Amazon.com	Amazon.com
Compatible with Vehicle Type	all-terrain-vehicles, utility-vehicles, street-sport-motorcycles, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles, street-motor-scooters, snowmobiles, marine-personal-craft	all-terrain-vehicles, utility-vehicles, street-sport-motorcycles, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles, street-motor-scooters, snowmobiles, marine-personal-craft	all-terrain-vehicles, utility-vehicles, street-sport-motorcycles, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles, street-motor-scooters, snowmobiles, marine-personal-craft	all-terrain-vehicles, utility-vehicles, street-sport-motorcycles, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles, street-motor-scooters, snowmobiles, marine-personal-craft	all-terrain-vehicles, utility-vehicles, street-sport-motorcycles, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles, street-motor-scooters, snowmobiles, marine-personal-craft	—
Item Dimensions	2.63 x 2.63 x 9.73 in	10 x 2.32 x 2 in	9.4 x 3.5 x 3.3 in	9.83 x 2.15 x 0.96 in	—	10 x 10 x 10 in
Size	20 Ounce	15 Ounce	20 fl. Oz.	16 Ounce	12 fl. Oz.	20 oz, 6 Pack

Compare with similar items

Have a question?

Find answers in product info, Q&As, reviews

There was a problem completing your request. Please try your search again later.

All Product Information Customer Q&A's Customer Reviews

Product information

Size:20 Ounce

Technical Details

Brand

Royal Purple

Model

11722

Item Weight

1.2 pounds

Product Dimensions

2.6 x 2.6 x 9.7 inches

California residents

Click here for Proposition 65 warning

Item model number

11722

Manufacturer Part Number

11722

OEM Part Number

11722

Folding

Vehicle Service Type

all-terrain-vehicles, utility-vehicles, street-sport-motorcycles, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles, street-motor-scooters, snowmobiles, marine-personal-craft

Additional Information

ASIN

B00B1VBQRS

Customer Reviews

892 ratings

4.5 out of 5 stars

Best Sellers Rank

#3,017 in Automotive (See Top 100 in Automotive)
#5 in Fuel System Cleaners

Shipping Weight

1.2 pounds (View shipping rates and policies)

Date First Available

January 16, 2013

Warranty & Support

Warranty, Parts:Parts

Feedback

If you are a seller for this product, would you like to suggest updates through seller support?

Would you like to tell us about a lower price?

Important information

Legal Disclaimer

one item sold per price

Product description

Size:20 Ounce

Max-Clean is a state-of-the-art fuel system treatment that cleans injectors, restores fuel economy and reduces both engine buildup and tailpipe emissions. Max-Clean’s proprietary technology targets both the intake system and combustion chamber and is effective on the entire spectrum of engines on the road, whether they are new or old, gasoline or diesel, naturally aspirated, turbocharged or supercharged. After multiple product fleet tests were conducted on various makes and models of vehicles, Royal Purple found that after, as little as one Max-Clean treatment can improve fuel economy an average of 3.2 percent and increase 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. Prevents premature spark plug fouling. Reduces deposit-related engine knocking and pinging. Deposit build-up is a natural consequence of fuel combustion, unfortunately these deposits can have a significant effect on the performance and reliability of your engine. With Max-Clean, Royal Purple has developed a product that in most cases can bring engine surfaces back to like-new clean, restoring once-lost fuel economy and performance.

From the manufacturer

Royal Purple Max-Clean Fuel System Cleaner and Stabilizer

Royal Purple’s Max-Clean is a state-of-the-art synthetic fuel system cleaner that deeply penetrates and cleans injectors, carburetors, intake valves and combustion chambers to restore fuel economy and reduce emissions.

NAPA Know How writers recently cited twice-annual use of Max-Clean in gas tanks as one of the “10 Overlooked Services that can Extend the Life of Your Vehicle.”

Highly versatile, Max-Clean is EPA / CARB compliant and safe for use in gasoline and diesel engines including all ethanol blends or biofuel. Max-Clean is great for use in in both 4-cycle and 2-cycle engines, and will not harm specialized emissions equipment.

Fuel system cleaner is worth it. Multiple product fleet tests were conducted on various makes and models of vehicles. Royal Purple found that after as little as one treatment, Max-Clean can provide significant advantages in engine performance and fuel economy.

Performance Advantages

Improve fuel economy an average of 3.2 percent and horsepower an average of 2.6 percent. Reduce hydrocarbon, nitrogen oxide (NOx) and carbon monoxide (CO) emissions (on average 12, 13 and 18 percent respectively). Prevent rough idle, hesitation, stalling and premature spark plug fouling. Inhibit corrosion and oxidation.

Additionally, Max-Cleans helps to reduce deposit-related engine knocking and pinging. It also stabilizes fuel during off-season and storage.

Recommended Treat Rate and Usage

10,000 mile interval - 20 oz. can.

Pour entire contents of 20 oz. can into a nearly empty tank and refuel. One (1) can treats up to 20 gallons. For tank sizes outside of this range, use one (1) ounce per gallon. In 2-cycle engines, use one (1) ounce per two (2) gallons.

Product Benefits

Improve fuel economy and restore horsepower
Reduce hydrocarbon, nitrogen oxide and carbon monoxide emissions
Prevent rough idle, hesitation, and stalling
Prevent premature spark plug fouling
Reduce deposit-related engine knocking and pinging
Stabilize fuel during off-season and storage
Superior corrosion and oxidation inhibitor


Fuel injector before Max-Clean	Fuel injector after Max-Clean

Amazon's ChoiceCustomers also viewed these Amazon's Choice items

Page 1 of 1 Start overPage 1 of 1

Customer Questions & Answers

See questions and answers

Customer reviews

5 star		74%
4 star		14%
3 star		6%
2 star		2%
1 star		5%

How does Amazon calculate star ratings?

There was a problem filtering reviews right now. Please try again later.

KP Smith

Here's 4 things you should know before buying this

Reviewed in the United States on June 5, 2019

Size: 20 OunceVerified Purchase

- Excellent product that seems to work very well in my experience
- You add this to your fuel tank approximately every 10-12k miles. Add on a full tank. Don't refill tank with gasoline after adding until necessary.
- This is a different product than the other royal purple cleaner. This one is designed to clean the entire fuel system where as the other is designed specifically to clean fuel injectors.

I hope this review helped you. If so please take a moment to hit the helpful button and let me know. If there's something i missed that could make this review better then let me know that as well! Thanks for reading.

93 people found this helpful

Helpful

Comment

20th Century Arber

Vroom... pop pop pop vrooooom pop pop pop.....

Reviewed in the United States on May 30, 2017

Size: 20 OunceVerified Purchase

Okay... i have a 2003 Honda Shadow with a gunked up fuel line. I was on 2nd can of seafoam and was all set to send it to the mechanic for a cleaning but, it was so clogged that I was unsure I would make it there. I ordered royal purple on a whim and figured i would try it. After about 10 mins of thinking eh... all of a sudden the line opened up and i had some fun riding around.. There is still some popping coming from the exhaust but, it's less and less with each ride as the stuff works through. Gonna keep at it but, this stuff does well it seems.

35 people found this helpful

Helpful

Comment

Nick Kidd

Awesome fuel cleaner!

Reviewed in the United States on May 4, 2017

Size: 20 OunceVerified Purchase

This stuff works really good. I'm not a mechanic and I have no idea how accurate the reading is but my dash tells my how much MPG I'm getting and I was steady at 25.6 MPG with my 2012 Chevy Sonic. I put this in last night and now it says I'm getting 26.4 MPG so it appears to be doing exactly what it says it does.

UPDATE: It's now telling me I'm getting 29.1 MPG 2 weeks later so this stuff is great!

31 people found this helpful

Helpful

Comment

Beeswax

Works really well

Reviewed in the United States on March 8, 2019

Size: 20 OunceVerified Purchase

I used this in my 08 Ram with 60k on it. I noticed it ran really well but the throttle response wasn't what it used to be. I put in 1 1/2 cans in and filled up with about 30 gallons and then drove for a week or so until it was down to 1/4 tank. It helped a lot and I was impressed. I bought 2 more cans and put both cans in and filled up and I noticed a huge improvement within a day or 2. The throttle response is so much better! I noticed now that it wants to open up and move even when I barely push the gas pedal. I have used other cleaners before but this one is the best I've used so far.

16 people found this helpful

Helpful

Comment

Don

WATCH OUT!!!!

Reviewed in the United States on November 15, 2019

Size: 20 OunceVerified Purchase

If you use this stuff on a vehicle with any significant miles on it and the potential for build up of carbon due to uncombusted fuel, you are risking MAJOR MOTOR ISSUES!!! I used it on my toyota sienna 1999. Within the first 50 miles my motor sounded like it had thrown a rod! I took it to two mechanics and looked at every youtube video I could find to duplicate the sound. Everyone said the same thing. "Spun a Rod Bearing". The noise was terrible. I was researching buying a new (used) engine ($2000.00 installed !!)due to the cost of a lower engine rebuild!! I took it to my mechanic to see if he was willing to try to replace the bearing with the motor in the car. He said he did not think it was the rod bearing, but rather carbon in the intake manifold system causing piston slap and a dead plug. He said he would take off the intake manifold and replace any bad plugs and clean out any debris that had broken loose and found its way into the upper cylinder area. Thank God I listened to him. He charged me $150 to remove the intake manifold, and replace one dead plug and clean out the crud that had been freed up using this stuff. I was lucky! I cannot recommend this stuff to anyone, if there is any chance that you have any significant build up of carbon residue. BUYER BEWARE! I had thrown away the container (having confidence in the product) so they would not even give me a refund! Not only did I waste the money, but incurred a $150.00 ADDITIONAL cost !

7 people found this helpful

Helpful

Comment

Thomas C.

Haands down the best fuel additive out there!

Reviewed in the United States on August 30, 2016

Size: 20 OunceVerified Purchase

I have used fuel system cleaners of every variety from the Walmart brand to products made by Chevron/Exxon. This is hands down the best I have ever used, and even after regularly using other products, I noticed restored power in a turbo-charged Kia Optima that I hadn't felt in a few years. Highly recommended.

18 people found this helpful

Helpful

Comment

Stephany

Top Quality at Good Price

Reviewed in the United States on September 7, 2018

Size: 20 OunceVerified Purchase

This product is a top quality cleaner. Not always having access to higher quality gasoline can take a toll and I would rather order this brand then to buy any other brand from gas station or auto supply store. Especially since the price is quite comparable. I have been using this in a Cadillac Escalade and look forward to using in my other vehicles as well to measure performance.

Can't speak as to the performance in an Escalade though as the large tank requires 24 gallons of gas. I use it more for reassurance that fuel system will remain in optimum performance with all this gas going through the system.

8 people found this helpful

Helpful

Comment

Dustin Williamson

Works well!

Reviewed in the United States on April 9, 2016

Size: 20 OunceVerified Purchase

Posting about a 1mpg overall increase in same driving the last 3 tanks. Driving a 2011 5.7l HEMI Jeep Grand Cherokee. Was at 15.3 on average and about 22.5 on the highway. Now at 16.4 on average and about 25 on the highway at 70 on level interstates.

64 people found this helpful

Helpful

Comment

Top international reviews

Translate all reviews to English

Patrick Foy

Unlikely to Notice Positive Change

Reviewed in Canada on September 11, 2014

Size: 20 OunceVerified Purchase

I am somewhat of a Royal Purple fanatic. I've had great results using their synthetic motor oil and oil filters and refuse to change brands at this point. With the Max-Clean Fuel System Cleaner, however, you probably won't notice a difference if you are just an average Joe and don't run any tests to prove the efficacy of this product. I haven't observed any substantial improvement with my fuel economy or horse power, so I just assume that the product has done what it's advertised to do. I would maybe recommend this product if you have never run a fuel system cleaner before, but overall I'm not too crazy about buying it again. I highly recommend their synthetic motor oil, though. Great stuff.

3 people found this helpful

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

Antonio R.

Excelente producto y seguro de usar.

Reviewed in Mexico on April 19, 2019

Size: 20 OunceVerified Purchase

Es un excelente producto, lo recomiendo bastante, el motor suena distinto después de usarlo y el ralentí se vuelve estable. Está a un excelente precio, en este caso use la mitad ya que está recomendado para tanques muy grandes.

One person found this helpful

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

Translate review to English

Stephane G.

It's worked, they clean all of my injector, ...

Reviewed in Canada on January 3, 2018

Size: 20 OunceVerified Purchase

It's worked, they clean all of my injector, i'm sure they clean some other stuff too, butt a bought this article mainly for the injector, and i notoce a difference after 2 days off using it

One person found this helpful

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

Kokoszka

Does what it says

Reviewed in Canada on August 22, 2018

Size: 20 OunceVerified Purchase

Helped clean up emissions on my 92 Lexus

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

Cameron Devenny

Love it

Reviewed in Canada on August 28, 2019

Size: 20 OunceVerified Purchase

Love it

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

Eduardo Pina Beceril

Es lo mejor en aditivo de combustible

Reviewed in Mexico on August 26, 2019

Size: 20 OunceVerified Purchase

Súper, antes lo compraba en Autozone al mismo precio, pero lo descontinuaron. Es lo mejor para tener el motor al 100

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

Translate review to English

Vincent chan

Good

Reviewed in Canada on May 5, 2019

Size: 20 OunceVerified Purchase

Good

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

Gilles

bon produit

Reviewed in Canada on February 23, 2019

Size: 20 OunceVerified Purchase

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

SKIP

Four Stars

Reviewed in Canada on November 21, 2014

Size: 20 OunceVerified Purchase

USED BEFORE IT WORKS GREAT UPDATE THIS IS FANTASTIC CHECK AROUND FOR CHEAPER PRICE ITS OUT THERE SAME PRODUCT

One person found this helpful

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

SKIP

... TO COSTLY TO USE AS A MAINTANCE PROGRAM BUT GOOD

Reviewed in Canada on January 10, 2017

Verified Purchase

WAY TO COSTLY TO USE AS A MAINTANCE PROGRAM BUT GOOD PRODUCT

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

Five Stars

Reviewed in Canada on November 3, 2016

Size: 20 OunceVerified Purchase

Worked good

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

YOUSAF IHSAN

Reduces knocking and increase mileage

Reviewed in Canada on December 4, 2019

Size: 20 OunceVerified Purchase

Product details and features

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

H11

Excelente resultado

Reviewed in Mexico on January 30, 2020

Size: 20 OunceVerified Purchase

Excelente resultado

Sending feedback...

Thank you for your feedback.

Sorry, we failed to record your vote. Please try again

Translate review to English

You've read the top international reviews

See all reviews from the United States

Pages with related products. See and discover other items: diesel filter, oil treatment, rv cleaner, rv cleaners, best oil additive for engine, gas additive

Other Sellers on Amazon

Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722

Frequently bought together

What other items do customers buy after viewing this item?

Customers who viewed this item also viewed

Compare with similar items

Have a question?

Product information

Technical Details

Additional Information

Warranty & Support

Feedback

Important information

Legal Disclaimer

Product description

From the manufacturer

Royal Purple Max-Clean Fuel System Cleaner and Stabilizer

Performance Advantages

Recommended Treat Rate and Usage

Product Benefits

Amazon's ChoiceCustomers also viewed these Amazon's Choice items

Customer reviews

Customer images

There was a problem filtering reviews right now. Please try again later.

Top international reviews

You've read the top international reviews