Hello. Been using your product with Marvel Mystery Oil and with full synthetic oils and also in the gas tank and went 230,000 miles on the 2000 Ford Escort and really great engine performances characteristics and gas mileage.Now using in my brand new 2014 Ford Fiesta in oil and the gas tank along with the Marvel Mystery oil and Motor Coat in oil and gas mileage going to Florida and Texas for the winter as Chicago is very cold and gas mileage us 57 miles per gallon with all my clothes and heavy 2 down blankets and 2 heavy sleeping bags and everything in trunk and the whole car all my stuff.