Bought 15l of their concentrated winter Screenwash. No details on the bottles or website. Diluted 50% and it froze at -4°C.

I now note the website says it's good for -4°C undiluted.

Please bring back the Lidl -60°C stuff!

I haven’t seen it for a while. I ran out of it at the end of last winter and this year is the first I’ve had frozen washers in a long time, and I was running 60% concentration of the replacement wash I’d bought. Was about the same temp as you had or maybe a degree or so colder. That Lidl stuff was fantastic. 

Edited 10 February, 20215 yr by UndertheRadar

The prestone stuff pretty good at a reasonable price...