Went to the dealership today to get my first oil change. I asked him if that I use Top Tier gas do I need to use a fuel injector cleaner also? His reply to me: "Absolutely not. If you are running 93 octane you should be good to go, but if you use 87 the yes, you DEF. need the cleaner." Why is it that so many people get these 2 things confused?? The first time I read about TT gas I understood what they were talking about. And this is SERVICE MANAGER telling me this! What gives?