pretty cool little oil extractor set up maybe?

[Pal]

 

[Pal]

There are a couple of possible "improvements" I could think of. Here is a "heavy duty oil" as opposed to just thin liquid drill pumps to use. This one is from Harbor Freight. Also, I'd take some snippets of tubing from a store to see which was the largest I could snake down my dipstick tube. Larger would be better, unless it caused a suction to develop in the oil pan. And, because your oil is warmed up before extraction, I might try to use that transluscent "stiff walled" or "non-collapsible" plastic tubing instead of the clear soft stuff. And finally, I'd have two or three tubes with different end cuts on them so I could just suck with one, but scavenge the bottom with another. Sort of a flat cut. Just thinkin outloud., Pal