reyes1212 wrote:oh what....thats pretty neat. but you still changed the filter right?
Yes, you definitely still have to change the filter at regular intervals.
I use the Mityvac 7201 on my bimmer (same engine as the E46 M3). See
http://www.amazon.com/Mityvac-...r=8-1
It has a fluid evac mode as well so after you've pumped all the oil out of the car, you can then dispense it from the pump to a container for recycling. Tip: drive the car for 15-20 min, shut it off and pump the oil out while it is hot.
Before someone say changing oil this way is a bad idea because it doesn't drain out any metal particles in the pan, let's use a bit of common sense. The job of the oil filter is to catch these particles. If there are metal particles present in your oil pan, then you have serious engine problems. Extracting oil with a "topsider" is perfectly safe.