The concern would be the relay valve freezing I think. The new starter I have is a turbine type, no rubbing parts in it, just bearings. It is supposed to have no problems with a little water or trash, and it needs no lubrication like the vane types do.
My brakes are hydraulic, although if the air disc brake technology is more advanced and available in a few years I will convert to air disc. So for now my truck will use very little air other than starting.
