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Regular
Posts: 64
Location: Knoxville | I read that I can put some RV antifreeze in the holding tank of my new Thetford, so that it stays usable during the winter, but I can't find the ratio anywhere. Thoughts? |
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Expert
Posts: 5870
  
Location: western PA | Most RV antifreezes are made to use undiluted, and are rated against freezing to their certain specs. If the antifreeze is cut with water, it's effectivity is reduced. If your travels don't include the very low temps, you may be able to use the products in a diluted form, mixed with the effluent. You could run a few tests in cups mixed with water, at different ratios and temps, to see how the various brands compare. |
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Elite Veteran
Posts: 720
| That sounds like an interesting experiment- I can hear it now- "Honey what is this cup of brown swishy stuff doing in our freezer??"
Hang on for the ride on that one! |
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Veteran
Posts: 104
| we have used rv antifreeze to flush the toilet in the winter for several years, in very cold weather (below zero). I put about a gallon of antifreeze in the holding tank, and then use it to flush everytime we use the toilet. |
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Regular
Posts: 64
Location: Knoxville | Thanks, ND. I will give it a try.I'm in east TN, so it's not too cold, but we did hit 7 a couple of weeks ago.I just don't want the antifreeze to ruin my new Thetford Curve, but I also do want to be able to use it! |
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 Elite Veteran
Posts: 657
Location: Rayne, LA | ND Cowboy------------ When you say you put in the holding tank. Can you be more specific. Are you referring to the black water holding tank? |
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Expert
Posts: 5870
Location: western PA | The black water holding tank is the one used for the toilet. The grey water tank is used for the shower and sinks etc. |
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Elite Veteran
Posts: 657
Location: Rayne, LA | My response was due to the statement " use it every time we flush". |
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Regular
Posts: 64
Location: Knoxville | I was assuming he meant he put the antifreeze in the fresh water tank. |
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Antifreeze in the holding tank to keep using potty
