I'm 66 and will be retiring next month. I purchased a new Buick Enclave for the wife and a new GMC Sierra crew cab for my self three years ago. Last payment will be Jan1, 2021. I'm hoping that I may never have to purchase another car in my life. I'll be parting with my 2003 Trailblazer EXT V8 shortly with 127,000 miles. I only have 10,000 miles on either of the two new cars. So I tend to keep my cars long and my mileage low. They get washed weekly with Maquires Gold Classic car wash, Waxed three times a year with Maquires Gold Classic Carnuba wax. I have used the Mothers Clay Bar kit twice. Armoral for the interior, saddle soap for the leather. I have Weather Tech mats for all the seating and areas and Rain-X for the glass. I just have no idea how to keep the black plastic trim BLACK. I've tried some products but to no avail. I've read promises of other products but would surely appreciate anyone with first hand info on products that actually do the job and last a few months rather than guess. I had someone tell me Rustoleum Wipe New was what he used, but he was doing it once a month. I'd appreciate any advice that you can give. Those hot sunny days take a toll on the trim. I'm also sorry for posting a question that most likely has been asked multiple times before. I scrolled through some posts but didn't see anything that seemed to fit my question. I am looking more for to maintaining rather than restoring or fixing problems. Of course if I don't get going, I'll be looking for those issues instead. THANKS, Dave