My reply pertains to the inside surface of the glass only. Like I said, that layer of slime the dash vents out is a b!tch to get completely off. I've had it take me 30 minutes of wiping to get it 98% clean. He didn't say whether he was having this problem on the inside or outside. If it's the outside, I have no idea why it's streaking. For the outside, I just clay-bar the windows and wipe dry. No streaks, no spots. I would suppose it's possible to clay the inside, but I've got tinited windows now, so the windshield is the only inside surface I'd consider doing that to now.
