I thought I read somewhere here that it results in screeching with the wipers.

 

I have the lightweight windshield and had my detailer add Glassparency, a ceramic coating, to my windshield and I get some mild screeching/skipping from the wipers in light rain that wasn't there before I got the coating. It seems less noticeable in heavier rain. The screeching has dissipated a bit over time as well. Not sure if Rain-X would behave the same way but thought I'd share a data point.

 

Thanks for the input.

 

I would wait until the you really need to re-coat the windshield. This from the owners manual

 

Use Aquapel. No need for wipers.

 

You dont wipe!?

 

But what about the big rear window and the windshield?

 

As long as I am driving fast enough and it's not "Florida" rain, I don't need the wipers. It beads like a **** and races off of the windshield. My windshield is ceramic coated.

 

RainX is painful. Your windshield will never seem clean again, no matter how much you wash it. Avoid.

 

Man, I'm glad I read this with the proper context!