WVO sucker tank, what am I looking for? Air compressor tank ok?

[505live]

Local craigslist has a guy selling an old 60 gallon air compressor tank due to a blown motor. I've been considering building WVO sucker, but I am wondering what I need to be aware of in tank selection / fitting requirements. I know water pressure tanks and propane tanks are popular, just wondering if an air compressor tank would have a sufficiently large fitting to transport oil through.
Also, what do you (ya'll?) think a fair $$ offer would be?
Any feedback would be great, I may try to go have a look at it here in an hr or so.
Cheers
Nate

[SignDoc]

An air compressor tank would work fine. If there is not a fitting on the bottom, a good welder can do one for you. I have a 120 gal. propane tank I'm going to use and the 2" fitting on bottom makes the whole tank look "wimpy", but it will suck out oil like a big dog... I would think anything from a 1" up would be big enough, yes size matters, smaller = slower. Just make sure it's on the "most bottom" part.