ok rapaire you got me on that one,i make an excuse of day dreaming in the 60s sf,still an abundance of water vapor would have a marked cooling effect[more than likly]do to the reflectivty of the clould layer.possible.
as to the limits on lubs being used on o2,most lubs that the unknowing would use or flamable,and in the rich o2 enviroment at high pressure would cause a fire,not an explosion,non flamable lubs like teflon are used all the time.mistakes can be dangerous though,watched a plane burn to the ground because someone used a scharder valve in a gox[gassous ox system instead of liquid,bad in either]system thet had been removed from a hyd system,he thought it was clean.suprise.