Most automotive MIG welding utilizes a gas shield, most commonly CO2, or C-25 (25 percent CO2 and 75 percent Argon). C-25 gas reduces weld spatter significantly, and produces the best-looking weld ...

The chart in the welder shows that you can use it for aluminum, but it does mention that it is difficult to feed with the stock liner. Aluminum wire expands as it heats, so you need a slightly ...