Would make sense otherwise your having to change it all the time. Its all new to me is this. I think we will use it one more weekend maybe two then it won’t be used till next summer so just need to make sure its right as im from Halifax and we have bad winters were i am, im in the moors
- Sep 4, 2011
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Used whilst Winter caravanning winter months , used for years never a problem as plastic parts and 2 teaspoons is enough. End of each trip drain and flush out.
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2 teaspoons in how much water?
There are metal parts in mine. Hopefully stainless steel but that comes on various grades.
- Jan 3, 2012
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Also drained our flush tank today our van is now winterised and the taps /shower left up and all the cupboards wardrobe and fridge doors left open .
- Sep 4, 2011
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2 teaspoons in a full tank. This is only put in whilst we are actually using the caravan during cold winter months. When home I drain it right down. Then when using again in frost add some again. The pump shaft is stainless steel. If you are not using the caravan during frosty weather just drain it down completely. We are still caravanning for 2 months.
If your cistern is like mine then it will hold about 8l of water or 8000gms. Your two teaspoons of salt will be about 10gms, so a ratio of 1 to 800.
I doubt very much that amount of salt will have any affect on the freezing point of water.
I doubt very much that amount of salt will have any affect on the freezing point of water.
- Nov 11, 2009
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Sea water is 3.5% salt concentration or 35gms per kg/ltr, and the freezing point of sea water is just above minus 2 deg C.
- Jul 15, 2008
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.......we caravan all year round and and put screenwash in the flush tank if needed in winter.
Hang the expense I say!
Hang the expense I say!
- Oct 17, 2010
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Never had a problem with water in the flush tank freezing when on site. Caravan heating takes care of that,
On a CL in Norfolk in Jan 2023 they were giving temperatures of -10 bought some water before I left home, carburised, used that in the toilet flush, had to go into Fakenham to bye water, site taps were frozen, could only have two packs, they were rationing it.
I only put car windscreen wash in the tank when not in use, flush it through into toilet to make sure all water is out of pump.
Putting salt in the system, is asking for trouble.
On a CL in Norfolk in Jan 2023 they were giving temperatures of -10 bought some water before I left home, carburised, used that in the toilet flush, had to go into Fakenham to bye water, site taps were frozen, could only have two packs, they were rationing it.
I only put car windscreen wash in the tank when not in use, flush it through into toilet to make sure all water is out of pump.
Putting salt in the system, is asking for trouble.
Common salt can wreak corrosion havoc with some stainless steels.
As the pump is very likely to feature a stainless steel shaft, probably of one of the effected cheaper alloys this potentially invites trouble,
In particular here there is an ideal situation for pitting from what is known as crevice corrosion.
I would not risk doing it if we had such a system.
As the pump is very likely to feature a stainless steel shaft, probably of one of the effected cheaper alloys this potentially invites trouble,
In particular here there is an ideal situation for pitting from what is known as crevice corrosion.
I would not risk doing it if we had such a system.
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