D30 Selectable Locker

[sevenslats]

I'll echo what Ron and Slats said: get the heavy duty air line.

Everyone I know who hasn't has had problems up here in the cold with air lines.

I don't know of anyone who has the heavy duty lines havingt he same issues.

...

I wasn't being facetious. I ran the blue line. Never had airline problems. Seriously. :expert:

About the only coplaint I had on the weather was the fact that the compressor cycled a tiny bit more often in the winter. NBD.
Now, it was a pain in the butt to get the axle housing bulkhead fittings in the correct order. I did go through two of those kits before I had a good tight fit.
One thing I did do for the blue line was sleeve it in clear plastic tube. I had it leftover from some other project I dont' remember, but it worked great.