I own a 2006 2500 with 75,000 miles on it. the truck has never had any tunners installed or pressure boxes. I did open up the exhaust ( cat back Magnaflow, mainly for sound)but that's about it. I don't work the truck all that hard, the heavy side is about 8-9 thousand pounds but average trailer is about 4-5 thousand. My question is I see lots of people with injector issues or other fuel related problems. I change my fuel filter every 8-10 thousand miles. Should I look into additional fuel filtration? I almost always buy my fuel from the same 3 stations, they are truck stops so I would think they have fresh fuel. Just thinking out loud, looked at a new diesel this weekend, with the cost of them I would like to get another 150,000 out of mine. My buddy's 04 is getting a new CP3 and don't want to drop that kind of $$$ if I can avoid it. He also has stacked box's and all sorts of go fast parts on the truck. Thanks in advance for any advice, Happy Holidays.