I recently bought a used jag from a dealer but the windscreen, while not actually smeary, is quite difficult to see through due to, I assume, some residual oil or grease or even polish. I regularly have the car cleaned at my local Tesco Bulgarian car cleaners and they always do a first class job but they might be the cause of the problem with polish used on the windscreen.
So is there a recognised way of getting the glass cleaned and can I get this done professionally?
FF