So, today I learned something new about trucking. Someone told me that high miles on a used truck is not always a bad thing. Its lets u know if that truck has been running its yearly miles, the average miles a truck is suppose to run is 120,000 a year. Did u know that, I didnt. So if a truck is way under that mileage u might want to get a report on every that is going on with that truck. If its been sitting to long at the dealer it can also grow allgey in the fuel tank.