I've seen a few home made oil extractor systems. Here are a couple links to those type of oil removal systems.
First one is from Northern Tool: you have to supply your own 5 gallon bucket but it's just 19 bucks
http://www.northerntool.com/shop/tools/product_200596412_200596412
2nd one is the entire system and it costs a lot more. 142 dollars.
http://www.imarineusa.com/jabscodiyoilchangesystemwpumpand35gallonbucket.aspx
Both of those above hook onto your battery for power.
I still have the hand pump extractor. All I have to do is pump a few times and then it creates a siphon and it removes the oil automatically after that. Easy peezy.
I had one from Northern tool wastes of money ☺☺☺