If I had that much alcohol in me I wouldn't care if anything froze.

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Great Wife, Joyce
2010 2310H Hi-Lo
2012 F150 4X4 SuperCrew EcoBoost w/Leer Cap
Reese WD Strait-Line Hitch
Amateur Radio K3EXU

Lol. So what you're really saying is that moonshine would be more efficient!!

Hey that's good to know. I would probably be targeting about 15-20 degrees at the lowest, and honestly it would only be for nighttime hours and the camper would be radiating a little heat during those hours. During the day it gets into the 30's and 40's and sunny. So maybe one of those $8 1.75L bottles could treat enough water to use the john and wash the hands for a weekend. But not this year since I winterized already

In 1996 when I purchased my first HiLo the factory rep told me that RV water lines are made to expand. As long as the ground warms up during the day, they should be fine. I accidently found myself out one night when it was 15 degrees. When the ground warmed up the next day, things thawed with no damage. I wouldn't recommend trying that though. I do dry camp when it is in the 20's. I keep propane running the water heater and blue flame heater (which is much better than any RV furnace and doesn't use your batteries) with cabinet doors open. Keep a couple gallons of drinking water inside to use until it warms up during the day. I really think the HiLo may do better with cold weather camping because the bottom is NOT enclosed. Heat from the ground really does work. Yes, the pipes may be frozen early in the day but it doesn't take all day for them to thaw. RV toilets can be used with little to no water.

I used Salt in my tank. I works down to zero F. We went to telluride Colorado on a Ski trip.
However the water (Brine) boils at a lower temperature and the water heater relief valve would blow off so you have to turn off the pump and bleed the excess pressure with the faucet. then flush the entire system when you get home.