I just did the oil pan on this same n52 with the return hose. I tried using one of those AC line tools, (the angled on) but in the end, just used pick tools to poke and pry at the inside yellow tabs and twist & pull on the hose from under neath the car. Funny how yours just pulled off.
![Replacing a #bmw #CCV on an #N52 Engine [Part 7] #E90 #automobile #mechanic #diy](https://i.ytimg.com/vi/tM4jRBoiHhI/hqdefault.jpg "Replacing a #bmw #CCV on an #N52 Engine [Part 7] #E90 #automobile #mechanic #diy")
){kind=link}
I just did the oil pan on this same n52 with the return hose. I tried using one of those AC line tools, (the angled on) but in the end, just used pick tools to poke and pry at the inside yellow tabs and twist & pull on the hose from under neath the car. Funny how yours just pulled off.