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Royal Purple’s New 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.

The illustration below shows the before and after effects of switching to Max Clean.

MAX-CLEAN Cleans Fuel Injectors
Illustration of before and after effects.

Royal Purple’s Max-Clean is EPA / CARB Compliant. Safe for use in gasoline and diesel engines and can be used with all ethanol blends or biofuel. Max-Clean can be used in both 4-cycle & 2-cycle engines and will not harm vehicle emissions equipment.

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:

Performance Advantages

Improve fuel economy an average of 3.2-percent

Restore horsepower an average of 2.6-percent

Reduce hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively)

Prevent rough idle, hesitation and stalling

Prevent premature spark plug fouling

Reduce deposit-related engine knocking and pinging

Stabilizes fuel during off-season and storage

Superior corrosion and oxidation inhibitor

Recommended Treat Rate & Usage

Max-Clean Fuel System Cleaner - 6 oz.

3,000 Mile Interval – 6 oz. can

Pour entire contents of 6 oz. can into tank prior to fueling. Treats up to 20 gallons. Ideal for two and four stroke engines.

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 two-cycle engines, use one (1) ounce per two (2) gallons.