I've just been thinking that after 3 years of ownership, I've never given a second thought to the screenwash I regularly fill up with (no small quantity, especially in the winter months).
I have to admit to being guilty of merrily filling up with any old gunk, usually from Halfords (disclaimer : other brands are available) especially when it's 2 for 1...

So, I'm just wondering : is there a preferred brand/solution? I realise that most of it is directed at the screen (hence the name), but I'm concerned that when using the cheaper stuff, if it's full of contaminants and other nasty stuff, it could potentially be damaging the surrounding paintwork...? (or worse??)
Any input/tips greatly appreciated
