2 questions air con and water stains

[11vtss]

k first question is if anyone knows how to get rid of water stains on windows and the other is how much work is involved in replacing a air con tx valve
thanks in advance

[cookie_ssv]

not sure about the water stains? maybe some good cleaner or a polish?

and tx valve. pretty easy only a 10mm and 2 t30's i think they are, (on the pass firewall) but ac will need to be evac'd and regassed, only takes 5/10 mins to replace it, may aswell get who evers gonna regas it to do it for you.

[VNV8]

for the water stains I've used both a clay bar and paint cleaner, both did an excellent job. I hear the autoglym glass polish does too.