@ mtyquinn I can understand the logic with a carboy - avoiding temp changes, etc.
My logic with corny kegs is - Stainless Steel - hotter = better. I did not think about the solubility of Oxygen though... curious point... hm... We need us a Scientist!
+1 to taking it apart. I rebuild my kegs almost each & every use. (Only *sometimes* do I skip it - for example, if I cold crash a beer in a freshly rebuilt keg, for only 5-6 days, then I immediately clean it with Oxy and refill it with StarSan - then I will reuse it one more time before I rebuild it.)
I go through a lot of O-Rings - but when you buy them in 200pks from McMaster - you stop caring about wasting a $0.02 O-Ring in exchange for the promise of a cleaner keg. Plus - I add Keg Lube to every single O-Ring and poppet, every single time. I do not like hissing posts or leaky kegs. Not in this house, nossir.