I had some black lines develop on the roof seems, so I called Keystone (supper easy) and they directed me to the roof manufacture, which I have the Alpha System.
https://alphallc.us/products/roofing/. The recommended using Dawn, Simple Green and for the black lines, bleach. After cleaning the roof, I sprayed the roof and awning with Wet and Forget. I told them I was using the cleaner and condition the dealer recommended and they said, with my roof I do not need to do that, just clean it.