I used to use Techron. It did help me with my fuel gauge not reading correctly, and oddly enough, with a slight hesitation I was having at very low throttle openings\low speed. However, it didn't do much for my cold starts in the winter. I've switched to Gumout Multi-System Tune-Up, and couldn't be happier. One thing I didn't like, was Gumout never answered my question of "what is the difference between Advanced PEA, and regular PEA"? It's not a new thing for manufacturer's to not answer my questions. Whenever I ask the aftermarket performance parts manufacturer's for data and dyno tests to backup their claims for more HP and TQ, I generally don't get an answer either.