On a track, the extra boost given by premium can mean a few tenths of a second difference on a lap time. In the real world, it barely affects performance, or fuel economy. Consumer Reports advises that premium should only really be used in your car if your ownerâs manual mandates it.
TIG-Gas Tungsten Arc Welding (GTAW). Gas Tungsten Arc Welding, commonly called TIG or Heliarc, is a welding process that uses a non-consumable tungsten electrode to heat the base metal and to create a molten weld puddle.
MIG welding is an acronym for Metal Inert Gas Welding. This process is sometimes also referred to as Gas Metal Arc Welding (GMAW). MIG Welding is used for aluminum as well as other metals and can be automatic or semi-automatic. MIG Welding uses a wire that is connected to a direct current source which acts as an electrode and combines two pieces of metal through continuous flow by use of a welding tool or gun.