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:

• Improve fuel economy an average of 3.2-percent
• Increase 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: 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.