buying antifreeze from asda's etc. and because it blue they've presumed they've bought antifreeze (not read lable *fail*)
a lot of antifreeze is not blue any more, Normaly white or yellow as its desighned to mix with Any type antifreeze to save
Mismatch*
so they've been topping up with screenwash


ithought id mention it here incase someone else falls for it.