l just need to know where to buy this and how to use it..like where to put it in the car?

Do not waste your money. It will not do what they advertise. The only thing necessary to a vehicle is proper periodic maintenance, not additives that make a lot of promises.

you can put c-foam in your gas tank or in your engine oil it can be bought at any parts store or walmart in the auto section. l have put this in my own car

you can add it in as a gas additive but honestly l have not ever tried it and the people that have used it have mixed reviews on it will say it works and some say it doesn't,wal-mart and most parts stores sell this,so you can try it,good luck.

the only thing it does do and well is a water remover for your fuel. dump the whole bottle in the tank and it will keep your fuel lines from freezing in the winter.