I agree jwmFcreek that maintaining this paint isn't any more difficult than normal paint. In a way, it's less work since you can't use any wax/sealants. Wash, dry, then (optionally) use a matte-specific detailer; that's it.
That said, I would be very uncomfortable using a foam cannon/pressure washer only. I am not sure that would remove all the dirt particles. I use a wash mitt (bought a nice one ...Gyeon Smoothie) very lightly and that seems to work fine.
Charles
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2024 BMW M3 Sedan Frozen Pure Grey II/Fjord Blue, 6MT
Past: 2021 Z4 M40i Frozen Grey II/Black Alcantara | 2017 F30 340i Mineral Gray/Coral Red, 6MT | 2011 E92 335i Le Mans Blue/Black, 6MT
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