Do you smoke? Or do people smoke in your X? If so the streaking could be from the tar/smoke coating the windows. I used to have this happen before I kicked the habit. I use ordinary windex with newspaper to wipe and have virtually no streaks. They also make some other glass stuff that works good (invisible glass, I think) but I don't have problem,s with windex so why change?

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2001 SE 4x4 5-speed
Super Black