Yep, I understand, but you're not pulling 20,000 lbs at 70 MPH over dirt roads and up and down 10% grades. I definitely wouldn't make it a standard practice, but as a one time occurrence I wouldn't have an issue doing it. We used to use a 2001 Ford 3/4T to pull 21,000 lbs of hogs in a Gooseneck up and down PA farm roads. THAT I'd consider tough duty if I did it daily, except that we only did it once a month. As I said, I wouldn't be concerned, but your only other option is to change it yourself. Bring a few empty 2 1/2 gal bottles and a drain pan if you don't want to let Joe Anybody do it for you.