Non-Toxic (pink) antifreeze.

[Lon nan Gruagach]

7 year old thread??? is there nothing new on the market?

 

[Spi D]

Years ago I tried one of the dedicated antifreeze products from a camping shop, as a test on a new to me boat where I was not familiar with it's plumming.

A bit expensive, did the job but left a smell/taste that kept for most of the followng season.
Not recommended

Ever since I just drain the system as before.

 

[chrisdcb]

Propylene glycol has a very low toxicity

Alphi 11 is almost entirely propylene glycol. See the msds http://www.my-sds.co.uk/Admin/ViewD...8b55-4107-9ded-9a1af95fbcec&primaryReportId=0

Thanks - you are dead right - ethelyne glycol is the killer - not propylene glycol.

 

[rbcoomer]

Try Elsan. I personally wouldn't want to deliberately drink any, but this is 'food approved'. If you add before draining tanks, some residue will be left in any low lying pipes etc. When you refill tanks in spring, run any taps use for drinking for a minute or two. Edit: link http://www.elsan.co.uk/anti-freeze.aspx

 

[maby]

Our previous boat was delivered from the factory with that stuff in the domestic water system and the dealer neglected to tell me during the handover - my first cup of tea on board was "interesting"...

 

[Mike k]

I use this in the domestic water supply over winter- but it does leave a taste/smell next season. I don't drink the water from the system so its no issue.
http://www.camco.net/product/winter-ban-100-10278/

 

[NoviceRod]

I use Freezeban, which I think is propylene glycol based. I drain the domestic water system by running the taps until dry, then put the 5L of Freezeban plus 5L water in the tank, and run the taps until they run pink. Seems to work OK, but I do have some strategically placed tube heaters for backup.
To restart, I drain again, then flush clean water through. It does foam a little, but we what little water (usally other drinks!) we drink we use Sainsbury's Basics bottled rather than from the system