While my car is only five years old, it has 121,000 miles on it. It's been maintained very well, although it seems to have been showing it's age lately. The main problem was poor throttle response and a little bit of stutter or missing under moderate throttle at low RPMs. I started using 92 octane gas just for a little better drivability. I have used Techron in the past but didn't get much improvement from the product. I bought Lucas Oil Deep Clean Fuel System Cleaner on a whim and I'm so glad I did. Withing about 20 miles, I could tell a significant improvement in performance. Now, with regular unleaded (87 octane) I am experiencing smoother idle, better throttle response, easier acceleration, pulling hills without downshifting, and no more stuttering or missing. I also noticed the next day that the car starts with greater ease. My sincere observation is that my car is running pretty much like it did when it was new ... no kidding. I'll know pretty soon if my fuel mileage is better as well ... so far it seems to be going farther on the same amount of gas as before using this stuff. I'll definitely be using this product again in the future. It's recommended on the package for every 3,000 miles, but I'll just round it out to every 5,000 miles to keep my car running smooth.
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