ok well just picked up my car from the dealer... They Replaced the Refrigerant Cooler AKA "Right Radiator", Vent Hose, O-Ring, Spring Clamp and 3.7l of Antifreeze... Also did the IMS and RMS, all under Old CPO

 

Great deal. The 3.7 liters of coolant isn't anywhere near the amount in the system so that answers if the system has to be drained or not

They must really like you to do all that work for free. I bet you like the car even more now

 

I remember when i had my Waterpump done on my VW 1.8T, i watched as they collected the Coolant while draning and then Refilled the same coolant back in, then just Topped it up... I think thats a common practice

Well i do have CPO and i did buy the car from Them :P