I like classic motorcycles and cars. I live by the sea. 303 Aerospace Protectant keeps plastic and rubbery bits looking fresh and new.
I don't know what the hell is in this stuff. I don't know why it is different than Armor-All, but the results are unmistakeable. 303 Aerospace really works.
I spray a rag and apply the milky looking liquid to the surface that needs it. It seems adding a little sea air and some sun to the rubber grommets, caps and fastener covers on my old BMW airhead will cause things to disintegrate before my eyes. A light coating of 303 Aerospace every few months has stopped that completely.
I've seen old vinyl seats come back to life. 303 amazingly even restores some of the lost flexibility in that old Corinthian leather, cracking and peeling significantly slowed to stopped. I've used 303 to keep my plastic kayaks looking new for years, and the fiberglass top on my Volkswagen Westfalia camper. Most amazingly, 303 really does a wonderful job on the horrible plastic covered cardboard dash in that same VW. The bus doesn't look new, but the dash does.
I'd read a lot of complaints from people about Armor-All over hydrating surfaces and cracking them worse. I suspect that might be due to over application, but I find 303 gives me a better, longer lasting finish anyways.