Hi Doug,

If you are using Autobahn 'blue goop' then 50% antifreeze and 50% water will give
you -37�C. If your hydrometer shows -30�C then I suspect that some water was left
in after a flush or such.
I'd suggest bleeding off 4 L mix and add 4 L straight antifreeze (spike the mix and
save for future top ups).

-Larry in Haliburton with 8" of snow on the ground and -13�C forecast tonight
BRRRRRRR.

Doug Alcock wrote:

> It's my understanding that we are only supposed to use a 50-50 water to coolant
> mix in our Wasserboxers. According to the back of the jug and my little tester
> dohickey ---- this resulting mix is good to -30 celsius or -22 fahrenheit. What
> do listees in cold climes use?? Here in Toronto it did get down to -30 celsisu
> last year --- but no colder ---- and I'm wondering if I should be increasing my
> mix to be on the safe side --- or is there a reason not to do this???
>
> Thanks,
> Doug Alcock
> '84 Westy
> Toronto, Canada