The More Mileage Plus fuel treatment is the perfect choice if your looking to get more MPG from your ride. This fuel booster can increase fuel mileage by up to 30%. More Mileage Plus removes built up combustion chamber residue, increasing fuel efficiency and improving your vehicles gas mileage. It creates a more thorough fuel burn to burn away residue left over in the combustion chamber. This increases your fuel mileage without harming your catalytic converter or oxygen sensors. It is safe to use with gasoline and hybrid engines.