2003 3/4 ton, 4x4, quad cab, 5spd auto, 108,xxx miles here. Mobil 1, K&N oil filter every 4,500 - 5,000 miles New paper air filter (whatever's cheapest) every 15,000 (every third oil change) Tranny flush/filter, front/rear diff change every 35,000 with synthetic. Brake pads at 75,000 One headlight bulb, 2 cab roof marker bulbs, two of four tailight bulbs, and both license plate bulbs replaced Haven't touched plugs/wires -- last I checked at 105,000 they were gapped within spec and clean. No problems (knock on wood) whatsoever, except the check engine light's been on ever since I put the locking Mopar-brand gas cap on. The fuel door doesn't lock, and when gas went to $800 a gallon I figured someone might want to steal, so I locked 'er up. That's the only code it's throwing, so I just ignore it.