I'm new to t. D. R. , so bear if this question has been asked . Does anyone have input on fuel additives . Mechanic at shop where I bought my truck said cummins needs only good quality fuel , no additives . Other brands need them but not cummins. Want engine to live long with much power . Heard b. G. Has good stuff . Don't want to use additives if not needed . Interested on your opinions . Seems like many people here know their stuff form what I have read , so far , will wait for input , it will be greatly appreciated .