I just bought my truck and when I first got it from the dealership my estimated mileage until E was around 430. Since I have been getting typically 355 miles til E. Is there any reason? I just towed my camper for the first time and really noticed it. Might be paranoid, might be that I haven't paid that much attention. Anyone else have this issue or does this sound like the same amount of mileage after you fill up?