[Efthreeoh]

Originally Posted by PhaseP

I recently bought a new return line and inspecting it closely I found out how to appropriately and easily disconnect it. I am talking about that oil return line from oil return tube on metal valve cover N52's (US 2006 330 and 325s).

It is meant to be disconnected by a fuel/ac quick disconnect. Any push, pull, press etc from outside on those tabs won't do anything to unlock it. It is not designed that way. Those four tabs are meant to be spread out from inside for unlocking and this is done with a line quick disconnect tool. I didn't have any, so I visited and bought a cheap plastic set from closest Autozone:

http://www.autozone.com/test-scan-an...?checkfit=true


Updated: At the below video I used the 5/8 inch blue tool from the Autozone set but had clipped off some part of it so that it would fit. Upon one more try later on, I found out that actually the 1/2 inch red tool from same set works perfectly fine and is the correct size to use. Once the tool is inserted good, you just pull the tube out. It needs some force but not a lot. A higher quality metal tool would probably work better and last longer, but this plastic set gets the job done especially for once or twice use.

Here is a video of it, sorry for the lousy camera work:

I'm glad you were able to use an AC/Fuel line quick disconnect tool to get the oil return line off. I tried with an AC/Fuel line quick disconnect tool also, an aluminum one. It didn't work for me at all. The tool I used was a scissors style tool (multiple sizes). The space where the hose is is so tight, I had to grind most of the tool away to get it to fit. It still didn't work. As a posted a few days ago, the Techs at the dealership I source most of my parts from, just hit the bottom of the bell-shaped connector (at the return pipe on the pan) with a large flat-blade screwdriver. Mine popped right off, with no damage whatsoever.