We definitely recommend using Cilajet paint sealant which is an aviation grade sealant we offer at all Autosport locations. For your situation and making it easy to avoid streaks we would recommend a liquid wax like Meguiar's NXT Tech Wax and some microfiber cloths. Good luck and let us know if we can help any further.
I take my 2016 white RDX to car wash.
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