Hello, 

I need help for the following.

I went to my car and parked it overnight close to a park and when i came back the next morning i found, as you can see, my windscreen very humid and full of mist. So I wiped the screen, BTW they are brand new Bosch, but left the streaks on the windscreen and I couldn’t see anything. Now I don’t know what it is, chemicals left from when I’m cleaning the car or the glass cleaner I used once long time ago or mud or grease from driving.  I have heard of lemon or vinegar but should i trust it or get some kind of windscreen product. Any help will do

Thanks

I have often used white vinegar to remove the wax left by a car wash.  Never had a problem. 

 

tom

I use Gtechniq G4 Nano Glass Polish 

 

https://www.gtechniq.co.uk/shop/auto/glass-metal/g4-nanotech-glass-polish/

As above briliant stuff

isopropyl alcohol, cleans well ad can even be used on vinyl records. I wipe my windscreen wiper blades quite frequently with it, as well.