Hi,

I purchased some Rain X the other week, applied it as advised, (i think i put too much on!!) BUT... If you use it how long does it last??

Since i applied it i have done about 1600 miles, (2 weeks) and for the last 1200 miles i think its all gone and worn off....

Most of the driving has been in the rain, but i recall after about 400 miles i had to scrap ice of the screen so i guess thats whats pulled it off????

One other thing i did was applied it to the rear window thinking it may help to dispell the water on my A4 Saloon, normally the rear glass cleans with the air flow at around 50 mph.. since putting the rain X on it does not clear for about 15 mins @ the national speed limit.. I know there is no direct airflow hitting it but i expected it to work due to the air flow over the car that would normally clear it..

Any thoughts??

Rick