I have always noted those dreaded streaks that end up forming in those rain run off areas just below the rear side windows of the supercabs as well as just below the mirrors but I have noticed them much more since I started using Zaino.

I have always paid extra attention to those run-off streak areas but now they seem more prominent. Overall, I believe the gloss to be deeper now.... is this why the streaks show up more?

My truck is 6 years old, bright red and I've always used Mequiar's Gold Class system in the past until I switched to Zaino about 2 months ago. The streaks have always shown up there to some extent and always easy to polish away but they are now much more resistant.
What does everyone else to reduce or remove these streaks and if anyone know any way to change these patterns, please post!

 

I had that problem once right after I bought my truck. What your seeing is basically dirt that the water is flushing from out of the window area.
This is what I did, I spent two frigging hours cleaning the snot out of the two side windows. I got every bit of dirt and dust out from around the windows and seals. Now when it rains the streaks don't show up. And after every time I wash I open those windows up and dry out the sill and make sure no water is in there.