I live in Wa. State...it rains a lot. The rear window get's wet/dirty ALL the time. I applied Rainx and it does help but wonder if there's something else (besides rainx and wiper) to help keep rear window cleaner, Like some sort of diffuser that would keep water from swirling up onto rear window. I bought the rear side spoilers for European Golf Variant (Wagon) but haven't installed yet as I'm going to have them painted body color first. I read they help a little but the issue seems to be from swirling water coming from under the car more than anything.
I don't like having to run rear wiper ALL the time.
I don't like having to run rear wiper ALL the time.