New car and wipers smearing

I still say white vinegar and when done a bucket of water over the screen then use the wipers, just to rule out the screen wash.

I knew i shouldn't of got involved in this thread, this morning it was fresh out side so needed to use the wipers yep couldn't see anything smearing like crazy.
 
First of all you need to get rid of what ever is on the windscreen before Fast Glass will work. Polish will never work to get off something nasty on the windscreen.
 
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