I spoke with Jayco. They referred me to Dicor. A rep at Dicor told me that the roof is TPO. She told me to wash it with a non-petroleum based soap and one with no citrus of fruity smell. She said to wash it with a medium coarse bristle brush four times a year. When I asked about special cleaners and protectants, she said, "Do not waste your money."
I asked about the chemical properties of the membrane, specifically if they were UV and moisture resistant and protected. She said that the material is made to resist moisture and UV and that there is no need to spend time or money on cleaners and protectant products/treatments. She acknowledged that Dicor markets the products, but they are not necessary. She reiterated her prior statement saying, "Save your money." She also told me that Dicor TPO roofs do not require a special TPO sealant. She said to use the normal Dicor lap seal product.
So I guess their is a lot of marketing hype around caring for these roof membranes. Three people in our dealer's service department told us that we had an EPDM roof, and they all tried to sell us a $100 worth of products to clean and treat the roof. They rarely know more than you do about your RV - what it is and what it needs. The RV ownership refrain beats on: "Maintain a Healthy Skepticism and Be Resourceful."