Or leave your dog in the locked truck while you go in to pay for fuel and see what happens.
Heh...I would say that's a possibility, but I can't remember the last time I went inside a place to pay for fuel. It's always pay at the pump. I can still lock him in and test though. Wait...the truck is still too new. He's not allowed in yet.
2011 6.7L PSD XLT - Dead and gone
2019 6.7L PSD XLT - Still too new!
2010 Wildcat 28RKBS 5er