zMAX engine and fuel micro-lubricant soaks into metal, reducing engine deposits for increased gas mileage, extended engine life and greater horsepower. Works with all motor oils, gas and diesel fuel. Reduces friction and increases horsepower. Dissipates engine heat and helps improve or restore gas mileage and reduce emissions in older cars and helps maintain gas mileage and emissions in newer cars. Extends engine life by reducing engine deposits. Made in USA Product Features:Works with all motor oils, gas and diesel fuelReduces friction and increases horsepowerDissipates engine heat and helps improve or restore gas mileage and reduce emissions in older cars and helps maintain gas mileage and emissions in newer carsExtends engine life by reducing engine depositsMade in USA