as title,,i forgot and bought 5 litres of concentrated screenwash %5.99 - 35% discount whauch came to £3.86..then i go to cpfl and see 5 litres is only £3 and -14% discount which is £2.58..same company,so why do they do it?anyway i bought another 10 litres so got 15 litres,i do a 50/50 mix so ive gotten 20 litres for £5.16p from cpfl and the 10 litres of 50/50 from cpfl for £3.86 if we had an extreme winter id just throw some neat in the bottle to mix with the 50/50