Saving Your Sun-Baked Plastic Trim (Mar 2026)

Most people fail because they don't clean the pores of the plastic. I learned this the hard way when I did a full resto on an old Patrol and the product peeled off in a week. Use a stiff nylon brush and a dedicated APC (All Purpose Cleaner) like Bowden’s Own Agent Orange. Scrub it until the suds stop coming up brown or grey. If there's old wax stuck in the texture, use a soft eraser or a dedicated wax remover. If it ain't clean, the restorer won't stick.

Don't waste your money on those milky white 'protectants' from the servo if the plastic is already faded. They're fine for maintenance, but for restoration, you need something with actual pigment. My go-to is Solution Finish. It’s a trim restorer that actually puts the black carbon back into the surface. I once used this on a customer's faded Jeep flares that were almost white, and 12 months later, they still looked brand new. Just wear gloves, or you'll have black fingernails for a week (trust me on that one).

If your trim is still in good nick and you want to keep it that way through an Aussie summer, chuck a ceramic coating on it. Something like Gtechniq C4 Permanent Trim Restorer is brilliant. It bonds to the plastic and creates a UV barrier that handles 40 degree heat way better than any wax ever could. It's a bit more expensive, but your partner will thank you when you aren't out there every Sunday re-applying stuff.

You'll see blokes on YouTube using a heat gun to bring the oils to the surface. Honestly, I wouldn't bother. I made this mistake myself on a black Commodore years ago, it looks great for a month, then the plastic becomes brittle and grey's out even worse because you've literally cooked the last of the internal oils out of it. Stick to chemical restoration; it's much safer for the long run.