Quote Originally Posted by turnitdown View Post
Continuing with the automotive product line of thinking...there is Back to Black made by McGuires that will dress the rubber without further oxidation. I'ts cosmetic only...OR, put the grills back on and fugettaboutit. It's just surface oxidation.
Thanks to everyone for their input. I have used all the automotive products mentioned on autos... If my memory servers me correct they are all like a cream, it would be a PIA to and apply and not get it on the paper cone. The Aerospace Protectant 303 looks interesting and if I was to attempt it, I would try this product but… EPDM roof membranes remain stable over time and can have a life expectancy of over 50 years – I’ll be long gone by then. So as “turnitdown” says put the grills back on and fugettaboutit!