You'll get a "bazillion" recommendations about how to care for your roof. Most of them are good, a few will probably be "out there" either in what to use or how to use it. That said, it's always good to "go to the horse's mouth" if you want good information to follow.
One excellent source of information is the actual manufacturer of the roofing that's on your RV. You can download the DICOR RV Roof Care Handbook here:
https://dicorproducts.com/rudys-down...care-handbook/
In it you'll find a complete guide to caring for both EPDM and TPO roofing products.