Another one here with a vinyl roof and ditto on the Murphy's Oil soap. DO NOT use any of the popular EPDM approved cleaners. If you wish to experiment with a cleaning agent, look for one that is approved for vinyl fabrics like older car seats and use in a small spot first with mucho rinsing.
Today is just the tomorrow you worried about yesterday!
'04' International 4400 LoPro 310Hp/950FtLbs 10Spd Harley/RV Toter
'05' Mobile Suites 38RL3
'01' Harley Ultra in the bike barn.
Fire5er. I don't know how many companies are offering the Vynal roof now. I know or Forest River TT had it and Carriage, Teton and I suppose others are changing to it. It's easier to maintain and ther's no chalking like on the rubber roof. Life span is about equal.