If I remember correctly quite awhile ago in the days of the dip stick it was posted that some dealers drained the oil this way through the dip stick. That being said ,it can't be that bad as some make it out to be.
Originally Posted by usaret
The milkshake effect I was referring to is the thin film that I've always found on the bottom of engine oil pans I've opened up. It would seem to me that the process of sucking the oil out from the top would allow this film (of what I suspect is settled debris from combustion blow-by) to build up over time. As I said before I may be too anal about this but pulling the plug makes me feel better. That being said I have a 24' x 30' fully equipped shop to do my work in and I'm retired so I have nothing but time. Plus my county takes used oil at what they call Environmal Collection Centers of which there are two within a short drive of my house. If I lived in an apartment in the city (the thought of which makes me cringe).... I would probably do it your way and just live with it. Of course mine is an '09 with an N52 engine which has no dipstick so I only have one choice.
2012 335iA Blk. Sapphire- Sport-Blk. Dakota Leather/Red-Brushed Alum.Trim-DAP-PP-CWP Rear View Camera-BMW Asst w/Enhanced BT&USB-High Gloss Blk.Trim Hghight-PSP-Speed Limit Info-Tech. Pkg-PDC-Rear Manual Sun Shades-SAT-Variable Sport Steering-Wheel Locks- Rubber Mats-Euro Del 5/14/12-Redelivery 7/16/12 2006 X3 3.0iA 4/6 Silver Gray Metallic-Black Leather-Nav-PP-SP-Xenon Headlights-PDC-Heated Front Seats-Privacy Glass-Servotronic Steering-Premium Sound System-R R R- Wheel Locks- Rubber Mats