Ya know those Chevy Avalanches? Those things are covered with the same kind of plastic as the fender flares on your Jeep. GM has had all kinds of problems with that plastic getting all chalky looking. After extensive study, they endorsed Armor-Dillo. It's really expensive, but it works and stays looking good for quite a while.

Linky

I've used it and can tell you from my own personal experience that it works well. I've tried lots of other stuff and nothing works like this does. The only down side as I see it is that you aren't supposed to use it on your interior. That's a shame too.

Oh, yeah. I guess it's sort of combustable if the pads are left in the sun after they've been opened so they tell you to rinse them out.

Also, we only get the full pads. I see on the site I linked to above that they have a half pad available. 1 full pad will restore the plastic on almost an entire Avalanche. Buy the half pad for your fender flares and try to line up a buddy or two to use the rest on their fender flares too. Otherwise your throwing away a lot of perfectly good product and it can't be saved once you open it. I've tried.

The directions will tell you to use it sparingly. They mean it. It really doesn't take much to bring back the original luster of the plastic.

Sorry if I sound like an ad for Armor-Dillo. Wyleone knows me and can stand up for me if you guys start thinking this is spam.