And oldred I had to quote you on this:
There is a huge difference between welding in a controlled environment where each joint is engineered and layed out before the process begins (Where something like flux core is strong enough and more strength is not needed) and trying to do a field repair or modification such as the auto suspension we are talking about here where strength could be critical.
A contolled environment does not change whay type of welding process you use. All engineered structures need a special type of welding process whether they are welded indoors or outdoors.
If you welded ski lift towers with a MIG ( Metal Inert Gas) the welds would fail from stress and extreme tempatures. If a bridge was welded with MIG the welds would also fail from stress and possible cold lap depending on the thickness of steel. Mig's weld pool cools at too fast of a rate. And can in some applications cause the weld to become very brittle with very little ductililty.
And as for auto repairs on suspension. Most auto shops weld with MIG because they can not weld with anything else.... Anyone can learn to mig with a little practice. That is why a mig welder getting 10 bucks an hour in a auto shop is a dime a dozen.....