Does adding fuel additives to your tank really help increase your MPG?
Nope, its just snake oil in a bottle. Keeping your car in good mechanical condition is the best way. Regular service of the engine will keep it running better and longer.
No, it does not. Once a year you should use a fuel system cleaner called BG 44K to clean the injection system and valves. Other than that you're just wasting money.
No. No, no, no, no, no. The only thing that will increase your miles per gallon is driving more carefully. There are a buttload of websites devoted to increasing your mileage legitimately. Absolutely none of them endorse additives if they are on the up-and-up. For ideas, search for hypermiling.
