hi,

you may want to try one or two bottles of Subaru coolant conditioner. I use
it and it's working good.

https://www.amazon.com/Subaru-OEM-Coolant-System-Conditioner/dp/B00WFI0W2Q

On Thu, Jan 23, 2020 at 10:00 AM Alfred Bagdan <abagdan@shaw.ca> wrote:

> We had some very cold weather the past 3 weeks,  -30 to -40 degrees,  and
> there was an antifreeze leak from my 85 Vanagon.  This happens only in very
> cold weather.  The expansion tank is empty but the coolant tank is about
> half full.  I did not check the levels last fall when I parked the van for
> the winter, so I'm not sure where it leaked out.  I can't see anything
> dripping from under the van, but the antifreeze melted the snow and ice
> under it.  The antifreeze is good to -40 deg.
>
> Is it a bad idea to pour in some sealant and run the engine to try and fix
> the leak?  If not what do you recommend?
>
>
>
> Alfred
>
> 85 Vanagon
>
> Edmonton
>