What good value screenwash for the winter?

[heners54]

Just diluted the last of my cheapo poundland concentrate screenwash, and looking at how the weather is going it's nearly time to swap to something with a lower freezing point than -4 degrees neat.

But being a tight git I don't want to spend £3-4 a litre on screenwash; what brands of screenwash do you use in the winter that work well and cost about £1.50 a litre? (about what I paid last year for wilko's own winter mix)

[heners54]

Thanks for the responses, looks like I'll be dropping by Lidl this week!