I have a 78 olds omega with 90,000 orignal mile. The car sat for several years before i inherited it. The carb was messed up and with some tweeking i got it running. Ran rough and drank plenty of gas so i decided to try your product. I use a bottle with each fill up and after three bottles the car runs as smooth as a new one and i gained 4 miles to the gallon. I also noticed an increase in power. Great product!