Bennett, George J wrote:
A nitrogen tank is pretty handy and cheap too. I understand a lot of racers have them so they can use air tools at the track (and to fill their tires with absolutely dry air.) Filled at 3000psi or so they hold quite a bit of air, and are super cheap to refill.With a simple modification, that little air tank can also run an impact wrench. At least long enough to break loose a crankshaft nut.