Hello new to the forum so I hope I post this in the correct forum. I own a 2017 Hyundai Tuscon with 26,400 mile. Okay two part question. Should I take my car and having the dealership perform a fuel injection service, or should I add a bottle of fuel additive to the fuel tank? I know Hyundai sells their brand of additive but what are some of the better additives to use?