Lucas High Mileage Fuel Treatment is created specifically to restore lost power and performance in high-mileage vehicles. It cleans and lubricates fuel system components, removes valve deposits, lessens oil contamination and stops knocking and hesitation. Product Features:Causes fuel to burn more completely for fewer emissions and more MPGClean fuel injectors and keeps them cleanReduces intake valve deposits and combustion chamber depositsContains no alcoholOxygen-sensor safe