After reading the reviews from everyone else, I decided to give it a try on my LX (128k miles). I had a 1/2 bottle of Seafoam that was about 3 years old and was not sure it was still good. I called Seafoam and talked to one of the reps who said he had used the product as old as 6 years and it worked without issue. He said my product was probably greenish based on my description of the age (which it was) and should be ok to use. Well, I did try it and YES, it did WORK! Lots of smoke, better response and smoother idle and shifting. I plan on doing it again along with adding it to the oil and gas this time. THANKS everyone for the comments! I'm sold! By the way, my check engine light did come on, but I corrected that by removing fuse 13 as described on this site. ALL is good!