If you go with the airbrake line you'll need something like the heater core to help get the moisture out of the air. Since I added it to my line my moisture has dropped to next to nothing and thats without a water bath. I just happened to have a spare small 12"x12" out of a lincohn and gave it a shot for sh!ts and giggles. I cobbled some fittings and JB welded them in. I bet a radiator would REALLY dry it out Plus your have a built in drain valve!

Give me ambiguity
or give me something else