A couple months ago I installed my air bags and an on board air compressor. The instructions say to install diesel air brake anti freeze in each air bag if the compressor will be used in freezing climates. What did everyone use to accomplish that feat. Kinda tight quarters there..
These are on your truck? If so, I've got them but unless you're inflating and deflating a whole lot, I wouldn't worry about that. The amount of water vapor that would condense into them might add up to an ice cube or two over a few years.
Like Walt eluded to ... the volume of air you add to your air bags is so small I really don't think it matters. Air brakes cycle continuously, so heat can become a factor as the water vapor condenses out in cold weather. I've run the Air Lift brand of air bags for 2 winters here in Kansas without adding the antifreeze and with no issue.