I've been using it for several years. Works reliably and can be easily rinsed out when wintering without leaving an unpleasant odor. Since you usually do not know the amount of water remaining in the tank, the following tip: Fill an estimated amount of concentrate (eg 2l into an empty 80l tank), catch the water drawn from the taps and fill it back into the tank. Repeat this process until the liquid tapped is not colored or is hardly colored. A sample of it in the freezer or better still in a compressor cooler with adjustable temperature (the minus degrees that you expect). If the sample freezes, the dosage would have to be increased and the experiment repeated. Otherwise everything is good.
Helpful?
by Harald W.
12/3/2018
Verified purchase
Variant:
11486
With this product, I have already had 3 years of good experience. I use it on a motor boat for the drinking water pipes and the toilet. The drinking water system should be rinsed very thoroughly at the beginning of the season.
The Yachticon antifreeze does its job, but is quite expensive and requires extensive rinsing of the tank in the spring, otherwise you have to deal with foamy water.