When I bought my '85 K10 in Dec. '05 it said 53,000 on the odo. Now it says 75,000. I assume that's 275,000. Has the original drivetrain. I think it's used about 5,000 gallons of gas to go that far.
I bought my '00 F-150 brand new in '99 with 70 miles showing. Now it shows 207,000. The only thing I've ever done is replace a few sensors, plugs and wires, the altenator and the ignition coil. Only left me stranded once (when the coil went out). Say what you want about Fords, but it has been a great truck. I put the first 100,000 on it in three years and the second 100,000 in the next five years. Since then I've moved about two miles from work and have almost stopped driving.