Advice from my detailer was do not use coin wash or automatic washes/soaps to keep the ceramic coating intact. It's supposed to last 3? years if you maintain it.
I tried a foam sprayer with Chemical Brothers Ceramic foam, worked well..but washing it off as a PITA as I do not have access to a water line, as I previously said.
So I decided to go with a waterless AMMONYC products.
The first completely fussy car care company. AMMO is a detailing system designed to protect and enrich the world’s most priceless cars. Developed and repeatedly tested by Larry Kosilla and his team of chemical engineers, our products build layers of protection and shine. They’re generations ahead.
ammonyc.com
and another product for non winter washes.
Spray on and wipe off. Then a lubricant to protect the drying wipe down.