Size:20 Ounce (Case of 6) Product Description 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-Cleanâs 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. Amazon.com 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. Before and after effects of using Max-Clean Performance Advantages 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 performance advantages are: Average fuel economy improvement 3.2% (up to 6%) Average restored horsepower 2.6% (up to 5%) Average octane requirement reduction 1.2% (up to 5%) Average hydrocarbon emissions reductions 12% (up to 44%) 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 Compliance and Safety Royal Purpleâs Max-Clean is EPA/CARB Compliant. It’s 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 and 2-cycle engines and will not harm vehicle emissions equipment. Recommended Treat Rate Pour entire contents of can into a nearly empty tank and refuel. One (1) can treats 15 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.