[nzporsche944s2]

Before anyone suggests changing the blades, this car is only 3 weeks old (mid December 2015).

There are no scratches, marks, or stonechips on the screen at all.

It has only rained twice here in that time (we are in summer) and it has the most irritating squeaking that I wouldn't expect on a brand new car. Today it's driving me crazy.

I thought Rainex might help but I recall someone (on this forum?) saying that Rainex is a coating that builds up and can make the squeaking worse (?)

Any suggestions?