hey, if i use the techron fi/ intake valve cleaner, am i going to have to change my o2 sensor, or spark plugs? *ron vogel?* anyone with this experience please
Sometimes that can happen with the GM top clean, but the Techron not so. I prefer to run a couple of tanks with a bottle of Techron in each before a tune-up, but you don't need a tune-up after you run it.