Originally Posted by jlc41
Have them go to 60lbs psi and tank the tire and wheel see if that shows the source of the leak. Good luck.
Yeah, I agree with this. The reason it's not showing in the tank is because there isn't enough pressure on the tire without the weight of the vehicle on it. 2psi per hour loss on the truck is going to be nothing off the truck. Raise the pressure and try again.