Mine is either over 400,000 or 500,000 we lost track when I was traveling so much I think 500 is the truth.Many times I thought back to when a semi had 500 onit it was gettting old then I drove a early 70s Mack for around 17 years (the comapny ran a swap seat operation when 1 driver parked it in the yard another driver would run it for his day, so often it wourld work 24 hr days) that went 2,125,000 before the company closed in 1989.Funny back then a Pu truck was lucky to run 200,000 now look at the mileage PUs from the 80s get-In so many ways we have gone a long way.