Thank you very much@Trucker3573
GX recommends using Xerex G48 (concentrate, NOT pre-mix) in the CS4
IMO there is no reason to worry that it won't keep your outdoor compressor from freezing if your use ratio meets the low Temps expected.
Amazon link below, but it is much less expensive at a local Auto Parts store
As far as cooling
I have had my CS4 in use for 13 hours (total) with no cooling issues.
FWIW
2 says ago, at an air temperature of 96* I ran the compressor for 2-1/2 hours, and I could still put my finger in the water reservoir.
The small thermometer I have mounted immediately outside the cooling fan vent read 101*
Just my limited experience
Hope this helps!
Edward
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