My Explorer has been the 2nd best vehicle I've owned, the 1st. being a Jeep Cherokee that rack up 490K trouble free miles. The Ex is at an estimated 350K trouble free miles. For around 3-5 years the odometer didn't work. It's my daily driver. I replaced the whole dash with a junk yarder and when it was taken out it showed 300K. I'm thinking this truck still has many oem parts, the trans has never been opened up, still has the original head gaskets, the rear end has never been opened up and as far as I can tell it has the factory water pump and that's based on if it was replaced, who took the time to paint it and the bolts back to the factory color? I bought it in 2001 from a friend who bought it new and got all the paperwork and repair receipts.