Thinking about vacuuming your oil? Here's what I've used.
I've used 3 different ones, the most recent one is the best but it also cost the most. First was a $20 electric pump, it didn't make it through the first oil change.

Second was a manual pump, it worked fine but only lasted about 10 oil changes. You have to empty it once in the middle of the change process and pump it probably 60-100 times during the entire process. This one cost $50.

Most recently I purchased this one from Harbor Freight. You can use if for a few oil changes before you have to empty it. This is the best one so far, just use your compressor to fill it with air and walk away. You may have to add air one time after the initial air charge. The nice thing about this one is that you don't have to babysit it. I did have to use the small hose from the first $20 pump I listed as the Harbor Freight one didn't have a small enough diameter hose to work with the Mercedes dipstick tube.
I also considered a couple of manual oil pumps but decided on the pneumatic since I do about 6-8 oil changes a year. I got mine for $128 using a 20% coupon.







