Originally Posted By: Craig in Canada
Russell:
I know exactly what you speak of. Over the years I found a number of products which did not cause the brown gunk. Lately, based on the now aging "guru report" that circulated with tire shine tests, I've been using the "new" "original" Armor-All applied by sponge. The "new" formula is water based, not the old formula that was actually detrimental to the plastic is was applied to. The "original" product is medium shine - actually fairly matte when applied with a sponge. I find it to be a perfect "OEM look" - clean, cared for, black but not wet or shiny. It's also a thin product so you can easily work it into the sidewall lettering or texture with the sponge and it won't build up.
I'd suggest a very thorough cleaning with an excellent tire cleaner product like Eagle One A2Z (or whatever they are calling it these days) and a firm bristle brush.
I've never had the new Armor All build up (like Meguiars Endurance), attract dust (like most products), turn brown (like you observe), get sticky or sling onto the car. It's been working great. It lasts a fairly long time, too, and I only use a half to single squirt or so from a finger sprayer (not a trigger sprayer) per tire.
Everything you say is dead on. I remember the old Armor All and how it hurt plastics. I had to replace some interior trim pieces on my 94 Corvette that became brittle due to AA. However, like you said, the new product is water based (no silicone anymore) and I use it just like you on tires and such. I also like the matte low gloss look. I can't stand the used car lot wet shine look!