for a few weeks now I have had a smear right in the centre of my view when it is wet, it looks like it has come off the wiper blade as it goes across the sweep about 3 inchs deep. I have tried cleaning it with 3M glass cleaner, autoglym glass cleaner, mr muscle glass cleaner, isopropanol, vinegar nothing is removing it. anyone got any ideas what to try next.
As Jamie said G4 is good, shifted the hard to remove misty areas on my screen outside the wiper reach but if it's a scratch it won't be removed.
