i went for an oil change recently and the guys said mitsubishi recommends a fuel injector cleaning at 15000 miles...is this something i really need to do...if so wut company makes a good fuel injector cleaner...thanks for the help

 

You don't need one, and I don't even think that mitsubishi even reccomends it, now if you had problems with it then you can try cleaning them, but if not just leave them alone.

 

just fill up with cheveron or shell everytime

 

I got some Fuel Injector cleaner from Wal-Mart(Can't remember the brand, may have been STP) and after the tank of gas where it was used was gone, my car sounded louder.

Not sure if thats good or bad.