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Old 09-07-2019, 09:55 PM   #101
Axis/Vegas Enthusiast
JamieGeek's Avatar
Brand: Thor Motor Coach
Model: Axis 24.1
State: Michigan
Posts: 8,135
THOR #1150
With the antifreeze it isn't necessary to keep the heaters on.

1/2 gallon is probably a bit of overkill. I only use 2 gallons total when winterizing our coach.

Remember the waste tanks should be empty + the antifreeze. If the water in them is going to freeze it will just expand into the tank. The Antifreeze will keep the valves from freezing up.

2014 Thor Axis 24.1
2018 Chevy Bolt
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Old 09-07-2019, 11:44 PM   #102
Senior Member
gmc's Avatar
Brand: Thor Motor Coach
Model: Hurricane 32A
State: Florida
Posts: 1,763
THOR #2829
Winterizing your RV (Axis/Vegas 24.1 specific)

If going the antifreeze in lines route, 2 gallons is about right as Jamie said... drawing it thru the lines at each fixture already gets some in the tank...

If blowing out lines instead (compressed air), still need to put antifreeze down each drain to protect traps and tanks... but a gallon would be enough there...

Freezing is a problem where there is no room for expansion... water supply lines, p-traps... the dump tanks when virtually empty have lots of room for expansion... want enough in there to get into the drain pipe to dump valve, but thatís all thatís needed there.

Of course moving to FL makes the whole process go away...

If you have a rig with the additional dump valve (typically when tank is opposite side of RV from dump valve) - be sure that valve is closed, and line running under the RV is empty...

Not yet retired...
Florida (Michigan transplant)
2014 Hurricane 32A
2000 Infinity (previous)
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Old 10-10-2019, 02:09 AM   #103
Brand: Thor Motor Coach
State: Rhode Island
Posts: 51
THOR #11834
Winterizing with Instant Hot Water heater

I ran this by Thor for winterizing my 2018 Vegas 24.1, with tankless hot water system, and got approval. First, I plan on blowing out the system. Then I will fill my fresh water tank with RV antifreeze, since I never use the tank. Next, I will pump the antifreeze through out the system in both the cold lines and hot, passing through the water heater. Lastly, I will put some in bot the gray and black tanks.

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