[lincy]

Hi...
I am running an automobile company. Can you suggest me the best gas used for welding?

[bap_]

That is not exactly enough info to go on.

Describing the welding process you will use is a must for what gas you will need, so lets start with that.

[cj737]

Since your profile states MIG, I'll bite that you want to know what is the preferred MIG gas to run to perform typical repairs on automotive projects. Correct?

75/25 is probably the most widely used, and common MIG gas for ER70 filler wire. You can also use it with Silicon Bronze MIG wire for body panel repairs (advantage of less heat required) on thin metal panels.