i believe i used rainx last winter.. it was orange in color. it took a lot of washing, buffing, and waxing to clean the area around my washer nozzles after that had been baked my black paint on by the sun. i plan on using the regular ole blue stuff this winter, and just doing a good job with an ice scraper beforehand, so that my paint stays in good condition.
I use the orange rain-x. It is a seaonal item at Walmart. I pick up about 6 gallons in the winter and that will last me all winter thru the next summer. I have never had a problem with it freezing up, and it does get cold here.
I just picked up 4 gals of Slug-a-Bug at WM.
This thing really cleans! Way better than the Rain X stuff. It says protects to +20 degrees. The coldest day in Austin in the last few years has been +25 degrees I guess this will be my all season formula
I actually had the prestone stuf freeze to my windshield once at above zero temps. Maybe a bad batch. :dunno:
I use the Supertech "winter formula", look for the darkest colored bottle. I've only had a problem at very low temps, last year I tried adding deicer and it worked great.