My coworker ran it all day and I just got back with Ram. Was going to do something and walked in front of Chevy, heard a hiss. Called coworker who takes care of vehicle work, ie calling mechanic to come out. Looked and saw green, um not coolant as Chevy is Dexcool. Turned out it is A/C Coolant! Guess stone got it and guy driving it ran A/C so it was pressurized. See they have dye in oil so you can see it with UV. Oh well, think I am taking it home on Monday night to make run Tuesday to Albany to restock stuff. Good run for it. I ran both recently and think sheer power goes to Ram, speed to Duramax!