Seriously guys, I know have a brown stain on it, lines, and plexus seems to do nothing for me?? whats up? Does anyone have any suggestions on how to clean my rear window?? Im not as fortunate as those 02 guys...

 

Plexus is more a protectant than a cleaner. I apply Plexus after a cleaner/polisher application.

https://www.s2ki.com/faqs/showfaq.php?threadid=17405

There is a Honda Service Bulletin about care for the plastic window out there (in my garage for one) but I'm too lazy to look for it .

 

Original BMW Cabrio Heckscheiben-Reiniger
A 75 ml Tube costs around

 

the key is prevention. just like you can put leather protectant on your seats, but if your leather seat is already cracked, what use is a leather protectant?? so for you all with good clean plastic windows. take the extra time to clean, will leave you with less headache in the future.
my 01 window looks better than showroom.... i was and wax once a week which includes the inside/outside with plexol.

 

Try the Meguiar's cleaners. That's what I use. I had some pretty bad brown stains on my window when I first got it from the dealership. I used the Meguiar's stuff and it looked brand new. I use Meguiars #10, #17 and #18.

I also use Plexus as maintenance.