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Part #: RP11722

Royal Purple 11722 Max-Clean Fuel System Cleaner & Stabilizer

For All Engines, 20 Oz. Bottle (Treats 20 Gallons)
Part #: RP11722
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Clean the fuel system in your gasoline, or diesel engine with Royal Purple 11722 Max-Clean Fuel System Cleaner & Stabilizer. Royal Purple Max-Clean has been specially formulated to deeply penetrate and clean injectors, carburetors, intake valves, and combustion chambers to restore fuel economy and reduce emissions.  

This highly versatile blend 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 both 4-cycle and 2-cycle engines, and will not harm specialized emissions equipment. Fuel system cleaner is worth it! Royal Purple has performed many fleet tests on several makes and models and after as little as one treatment, they found significant advtanges in engine performance and fuel economy. 

  • Can Improve Economy Up To 3.2%
  • Restores Horsepower Average 2.6% 
  • Superior Corrosion & Oxidation Inhibitor
  • Prevents Rough Idle, Hesitation & Stalling 
  • Stabilizes Fueol During Off-Season & Storage
  • Reduces Deposit Related Engine Knocking & Pinging
  • Reduce Hydrocarbon, Nitrogen Oxide (NOx) & Carbon Monoxide (CO) Emissions 
Recommended Treatment:
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 one (1) gallons.


  • MFG. Number 11722
  • Manufacturer Name Royal Purple, Ltd.
  • Shipping Weight 1.00 lb.
  • Shipping Length 3 in.
  • Shipping Width 3 in.
  • Shipping Height 10 in.
  • Fuel Type Diesel / Gas
  • UPC 641330067563
  • Warranty Yes
  • Warranty Info 1 Year / 1 Oil
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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