P21S Washer Booster Roll Water Off?

S

shadow85

New member
Even when I drive at 70mph, the rain only really start to roll of the my windshield. I added the P21S Booster to my windshield fluid and cleaned the windshield. Now rain starts to roll off at 50mph.



So I am wondering, does P21S leave something that makes this happen or is it because the the windshield is cleaned better, so clean window roll water better?
 
It might have something, have you tried emailing someone at P21S?



Try putting some JW Acryllic Jett on, it rolls off at 30 mph.
 
Not trying to jack your thread or anything but I have a question thats sort of related. Has anyone done a test to see what wax or window chemical begins beading off water at the LOWEST speed? I have aquawax on mine and it seems to start beading up and off at about 40mph. I'm sure window marring and crack and chips affect this also.
 
I don't know if you could do a fair comparison of products in that regard unless you had somebody try them all or only took results from cars with the same aerodynamic profile...or whatever it's called.



The way the air flows up to and over the windshield will most definitely skew the results.



Good idea though.



As far as the OP goes, I don't know. I've never been one to treat my windshield to much other than wash soap, QD and window cleaner. I'm just too lazy.
 
Also consider that the windshield itself (angle, material composition, etc) will play a role in what speed water will begin to roll off.



I think Aquapel is an extremely good, durable, and purpose-made product for this job.



I use UQW and it works very well too, but some have gotten streaking from this (which I think is from continual use and film build-up).
 
Thanks guys. I am actually considering optiseal on windshield but dont know if it will streak. The aquapel seems like a more official product for the job. Is it easy to use and hard to streak?
 
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