try ringing main dealer they must have come across this before
is your a UK car or grey import that could make a difference
your lucky some peugeots have 3/4 lots of brake sizes
Wozz i used pure Argon for a year os so it was free never had any problems with my mig using it on mainly car body stuff so the answer might be NO but YES you can and i did
i had a diesel carlton black all leather CD multi player in the boot think it was executive model or top of the range bit sluggish but would run all day 90 ish on private roads of course rust finished it off