I've had my Black 05 G35 for about 3 weeks and whenever I wash it there is a thin film of residue running from the front corners of the sunroof to the top of the windsheild. How can I prevent this from happening? I use a leaf blower to dry the car and this is the only area I have this problem.

 

what i do is after washing, open the sun roof and get a rag and wipe around the frame on the car and the trim on the sunroof panel. works for me