This MAP gas torch is my solution to countless problems in the garage. I use this loosening up seized bolts as well as expanding cases, hubs and more for bearing installation and removal. Check out this video on my YouTube channel for a more detailed explanation of my use of this torch:
Not only is the torch itself reasonably priced, but a can of MAP gas lasts an insanely long time. I put many, many hours of flame out of this torch before I need to purchase a new can. You can purchase MAP gas here.