Could it be AC freeon fluid from an internal leak?My brand new 2022 Ridgeline, just got in April of this year keeps getting an oily film on the inside of the windshield. The only other time I have seen this is when I had a problem with my 2001 Dodge Ram and it turned out to be the Heater Core was bad. Once replaced, no more film. I can't believe my brand new Honda has a heater core problem. I just took it into the dealer for first oil change and told them, and showed them pictures of the film on the windshield, they just gave me recommendations - like use a sun shield, park in the shade, etc. which I already do! Anyone else have this problem? Also, notice the really weird design on the glass. What is that???
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So, while at the dealer's, after I told them about the windshield, they completely cleaned it. (Although I had tried that before with windshield cleaner, vinegar, alcohol, you name it) and the film still comes back.
So, they cleaned it on Monday and I took the following pictures on Wednesday! The film is building up again!
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I ran my finger over it and it is definitely oily!
What can I do about this?
Don't smoke, always run air on recycle, don't drive with windows down.