[Arizona_928]

Originally Posted by 911 Rod

Maybe they didn't do a full flush? Should it be green or pink? I'm thinking mixing green and pink would give you the colour you have.
I bought a Schwaben coolant refill tool for my 996 and it was a joy to use. Not only did it fill without any air voids, it pressurized and found a leak that just needed the clamp tightened.

https://www.pelicanparts.com/More_Info/PEL003466SCH01.htm?pn=PEL-003466SCH01&bc=c&SVSVSI=

Vw coolant is pink. Not green

It looks okay to me tbh. The brown residue on the bottle could be oxidation or contamination. I would pull a sample after it's been ran through the system to confirm or see if the oil cooler work is still under warranty and go that route