Judging by your location (Nebraska), the size of the line you use, the material the separator is made(Metal) and the position away from any heat source under the hood, I think you have great chance everything freeze next winter!
But he realy look great and even better on a compressor! Time will tell...Good luck.

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2005 CRD Ltd/Tru-Cool 4454 LPD
/Filter bleeder CRDBV/Fumoto F102/ProVent 200/Euro TC
/Hayden HY2905 Viscous clutch with OEM 52079654AE fan mod
Samco/OME/Bilstein/JBA4.5/Mattech BTA Machined trans valve body
/BF rugged terrain 245/75/16 on MOAB

