Bought Hobart Handler 140 - need help with gas for stainless/MS

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Hi all,Picked up my first personal welder.  Just a Hobart Handler 140 MIG.  I ordered a bunch of wire with it too - 0.030" 308L and fluxcore.  I want to know what gas I should pick up for doing stainless.  When I TIG welded on a friends cheap DC Snapon, I never got good color in the welds but they stuck - was using Argon/CO2 75/25 I think.  I know stainless people say to use Tri Mix - is that for TIG and MIG?  Just TIG?   Just MIG?  And, if I pick up Tri-Mix, can I use that for mild steel later (non-fluxcore)?Thanks all.Jon
Reply:Trimix is for mig only, mainly stainless. Straight argon is for tig.City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
Reply:So if welding mild steel and stainless I'll need two different gases for MIG?75/25 CO2 for MS?  Trimix for stainless?
Reply:Originally Posted by Jon KSo if welding mild steel and stainless I'll need two different gases for MIG?75/25 CO2 for MS?  Trimix for stainless?