Quote:
Originally Posted by hyperpunx
how well does this work in relation to traditional methods of changing oil?
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Even draining with the drainbolt doesn't get all the oil out of the motor
As said before on my E36 I used this and it got out all the oil, I checked by cracking the drain plug after I used the vacuum and only a drop or so fell out (probably just residual oil still draining from the topside)
I am comfortable using this method, the worst it can do is leave behind a small pool if you dont put the tube all the way down, and in the grand scheme of things its filtered used oil which has had another 5+ quarts of clean oil added to it
There are others who do topside oil changes and have gotten used oil analysis done and they were fine. I know its popular in the Mercedes Benz crowd for difficulty of accessing/removing the drain plug, and there have been no problems except they have to use a smaller tube so it takes longer