John H
New member
I have a strange phenomenon to discuss, and seek advice.![[FONT=verdana,geneva"]](/forum/styles/default/pcgb/space.gif ". [FONT=verdana,geneva\"]")
It has been a very dirty, salty weekend using the Cayman (though a peerless driving performance) and this morning I went to wash it. I was alarmed to find I could not get the windscreen to clean. The whole area outwith the arc swept by the blades stayed dirty no matter how often I washed it, I have never seen this before. It was as if the glass had been etched, or acid eroded, or a limescale deposit put all over it. My first thought was that I must have been following a tanker spewing something noxious, and was worried in case it had ruined the whole car, but no, the rest of the paint work cleaned up OK, with the exception of a few areas round the windshield and the roof, which had the same unmovable "limescale" type marks. I eventually got the screen clean with detailers clay and some glass polish, and then it dawned on me that the culprit must be the windscreen washer fluid. All the areas of deposit were linked to where the stuff had been flowing during use on dirty roads. I'm stunned. I have never seen this before. As the Cayman does not see much dirty weather, I have only rarely filled the screen wash bottle, and have tended to use an old bottle of Porsche branded solution, orange in colour, in one of those dispenser top bottles. Come to think of it, it is probably ancient, as I got it with the 964 years ago. It ran out recently, so I topped it up with the special lemon scented "fan spray" stuff made by VW which I have used without trouble for 10 years in all my VWs. I wonder if some strange reaction between the two solutions has produced this "scale" to form. Anyone else come across this problem, and what the the rest of you use for washer fluid? [&:]
It has been a very dirty, salty weekend using the Cayman (though a peerless driving performance) and this morning I went to wash it. I was alarmed to find I could not get the windscreen to clean. The whole area outwith the arc swept by the blades stayed dirty no matter how often I washed it, I have never seen this before. It was as if the glass had been etched, or acid eroded, or a limescale deposit put all over it. My first thought was that I must have been following a tanker spewing something noxious, and was worried in case it had ruined the whole car, but no, the rest of the paint work cleaned up OK, with the exception of a few areas round the windshield and the roof, which had the same unmovable "limescale" type marks. I eventually got the screen clean with detailers clay and some glass polish, and then it dawned on me that the culprit must be the windscreen washer fluid. All the areas of deposit were linked to where the stuff had been flowing during use on dirty roads. I'm stunned. I have never seen this before. As the Cayman does not see much dirty weather, I have only rarely filled the screen wash bottle, and have tended to use an old bottle of Porsche branded solution, orange in colour, in one of those dispenser top bottles. Come to think of it, it is probably ancient, as I got it with the 964 years ago. It ran out recently, so I topped it up with the special lemon scented "fan spray" stuff made by VW which I have used without trouble for 10 years in all my VWs. I wonder if some strange reaction between the two solutions has produced this "scale" to form. Anyone else come across this problem, and what the the rest of you use for washer fluid? [&:]
