Liquid oxygen can be used for breathing, for fuel cells, and as an oxidizer for propulsion. However, it is cryogenic, and will slowly boil off in storage, even in a spacecraft. What is the longest amount of time that LOX has been known to stay liquid in space? I am particularly looking for the duration between the time of launch and the time at which the remaining liquid amount is no longer considered adequate for its intended purpose (i.e. complete boil-off is not necessary).
Another question asks about the record for cryogenic fuels. This question differs because I am asking about all uses of LOX -- not just as propellant. (For example, space stations should be considered here but not there.) Also, the only answer to that question addresses LH2 but not LOX.