Last time I used this extractor, I sucked the oil out of the oil filter housing first before sucking out the dipstick. This time, I sucked the dipstick first but with the oil filter housing lid loose (to let air in) and the oil filler cap closed (to keep air from coming in). After the oil was totally evacuated from the oil pan, the oil filter housing was totally empty as was the filter element which lifted out into the catch pan without spilling a drop.
CLICK TO PLAY VIDEO!
Here's the home made evacuator. Helium balloon tank holds 5 gallons. 12V vacuum pump running off a battery charger (leads not long enough to run off battery). Any vacuum pump will do (refrig compressor, AC refrig evacuator etc). Video is self explanatory.
CLICK TO PLAY VIDEO! The sound in the background is a leaf blower running across the street, not my vacuum pump.
Drains itself by gravity. Not one drop was spilled in the process! This has to be the neatest oil extractor system for the 617. I have a Mityvac oil extractor brand new that a forum member gave me when he moved to Europe but I have never used it because my DIY extractor is better and much neater. The key to it's success is the 3/4" i.d 1/8" wall thickness vinyl hose which stretches over the dipstick tube.
