The rear window trim on my Intrepid is all dull looking and faded. I've tried many products over the years, 303, Back to black, ect ect. Pretty much everything that I've tried, has acted like a tire dressing, just rests on the surface and makes it look more glossy and turns it a little darker, only to dissapear in under a week. Is there actually a product I can use that wil soak down into the rubber and revitalize it? Is it impossible? Thanks in advance. :dance