I drained my coolant for a flush and noticed what looks and smells like oil in it. My overflow tank was also empty 😬. It seems like my head gasket is starting to go, but is there anything else that could cause this? Car has never overheated, I'm even running MS2 so I can see the exact coolant temp.
temp and it's always been fine.

 

Yummy chocolate milkshake!

Your HG is toasted, sorry

 

Thank you for confirming, just glad things didn't get a lot worse...