Come on now, don't know that oxygen free deal.. I've got speaker wire that has turned as stiff as a board due to oxidation.. Turned green under the insulation, etc..
Although, could that be somehow caused by the the type of vinyl used for the insulation ? Hmmmmmmm ?
PS: Chess, your pictued of that chillin pint is just killin me ! Have mercy monsieur.. I'm trying my best to make it thru another day here.. haha.. Hours and hours to go yet..

LFE ! The rest is just details..