What do you have available? Almost anything will work. 6011 or 6013 will weld through almost anything. Rust, oil, pizza. 7014 is great, cause it is so easy to use. 7018 is "the king" of welding rod. If you think about it, all your doing is screwing up some nice shiney gears so they won't turn.
A forum community dedicated to custom off-road vehicle owners and enthusiasts. Come join the discussion about trail reports, builds, performance, modifications, classifieds, troubleshooting, fabrication, drivetrain, and more!