Dave, Suburban is and has been a shady company. I had friends who worked there and the thing they made the drivers do. Not picking up tanks, topping off tanks that were not even half empty when the customers did not want then topped off just to name a few. That's why it was so easy to get people to switch out. They would keep your tank full so they could use that as an excuse not to remove it. Tell you that the gas was theirs until it went thru the valve and I could not pump it out. sorry but the tank is Suburbans and the fuel is the customers. I can pump the fuel in to my tank anytime I want and return the tank to suburban. Suburban would even try to charge the clients for tank removal when I did the work. hell one of there drives topped off 4 tank on one street that I had changed out 6 week before. Those guys got free gas that day.