EPDM rubber roof

My trailer is a '95 Sunnybrook 26DB. As far as I know, the roof is original (yes, 30 years old!). With proper prep, is it feasible to roll on the Dicor roof renew product and expect it to last at least a few years? The trailer is really good for us, but we store it outside and I'm concerned that we're really pushing our luck with the roof. I've already patched a couple of holes.

The trailer isn't worth much for resale, and a new roof is out of the question. Just wondered what people's experiences have been with the Dicor product on a really old roof.

Thanks.