I used Rain X for the first time on my TV. I used it as per the insructions with a dry towel let it dry and did it again. It left my windshield looking terrible it looks like something oily has been s...
On my long road trip I switched my RainX washer fluid from winter blend to summer blend (-30 F vs 0 F) ... the water beaded up more on the winter blend, but the summer blend does do a better job dissolving bugs. I don't use the treatment (yellow bottle), just the fluid.