If you live in a major metropolitan area, the fuel you buy has injector cleaner added to the fuel. Any additive beyond that is a total waste of money.

If you don't live in a major metropolitan area, but go there occasionally, then fill up when you're there. Occasional tankfuls will be enough to keep injectors clean. If you never go there, use a quality cleaner such as Chevron Techron every 5,000 miles or so. Keeping injectors clean maintains a fine mist pattern which promotes maximum efficiency.

Adding octane value to fuel that already has ADEQUATE octane, does absolutely NOTHING. If there is adequate octane, higher octane will add NO power or fuel economy. As long as the octane is high enough to keep the knock sensor from sensing knock, then you have as much octane as you need.

The reason there are so many "miracle in a bottle" products on the market is because there relates back to something that P.T. Barnum said over 100 years ago. "There's a sucker born every minute."

Have a great day,

Have a great day,