TIG gas - I'm confused

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Read the two sticky articles above. Very confusing. One seems to say not to use argon for mild steel, other one says not to use Argon/CO2. Went to my LWS and they told me I need 75% argon/ 25% CO2 for steel. All of the Lincoln and Miller information says use 100% Argon for mild steel. I don't get it..... Millermatic 211Lincoln Precision TIG 225Century 250 MIGLincoln 225 AC Box (sold)I support my local welding store (Amazon, McMasterCarr, Cyberweld, EBay).
Reply:tig is always either argon, or argon/helium blend. the average person will always use argon. c25 is used for mig on steel.Dynasty 200DXPassport plus w/ spoolmate 100victor 315c oxy/(act and prop)Miller digital elitemilwaukee power tools
Reply:Most  everything I have read, watched, & been told on here, say 100% Argon. That,s what I went with.
Reply:Turk's got it.My name's not Jim....
Reply:wait, your LWS said you need 75/25 to tig steel? You may want to find a different LWS if they recommended that for tig welding.ESAB MigMaster 275Miller Econotwin HFMiller Syncrowave 250
Reply:Originally Posted by Fab54Read the two sticky articles above. Very confusing. One seems to say not to use argon for mild steel, other one says not to use Argon/CO2. Went to my LWS and they told me I need 75% argon/ 25% CO2 for steel. All of the Lincoln and Miller information says use 100% Argon for mild steel. I don't get it.....
Reply:I could see that if you went in to your LWS and said "what gas to weld steel" there might be room for a misunderstanding, but if you asked "what gas to tig steel" they should know better than to suggest 75/25.
Reply:Originally Posted by boatbodI could see that if you went in to your LWS and said "what gas to weld steel" there might be room for a misunderstanding, but if you asked "what gas to tig steel" they should know better than to suggest 75/25.