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Our 2019 Ascent is now just over 4 years old. It has 16k miles and lives outside. Most if not all of the plastic trim at the bottom of the rear bumper and around the fender wells are discolored, faded (turned grayish) or have drippy lines. We regularly wash and dry the car. I use standard window wash fluid on the rear window.

Have you experienced this and what have you done to improve your plastic trim?
Car Automotive tail & brake light Land vehicle Vehicle Vehicle registration plate
 

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2019 Subaru Ascent Limited 2010 Subaru Legacy GT limited
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You need a plastic conditioner like 303 Aerospace protectant to treat that plastic. There are many brands available that do the same basic job. I like the 303 because it is low sheen and works on everything from tires to the dash board.
 

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You need a plastic conditioner like 303 Aerospace protectant to treat that plastic. There are many brands available that do the same basic job. I like the 303 because it is low sheen and works on everything from tires to the dash board.
I agree with the suggestion of 303 Aerospace protectant as something that will keep the plastic from deteriorating initially, but he will need something else to rejuvenate the black trim before he uses 303. It looks like CeraKote was the winner, but it is difficult to apply, so most people would be happy with the Chemical Guys product.

 

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I have also used chemical guys wrap detailer on our plastics, it works really well and has a UV protectant. I do believe any of the ceramic coating kits can also "restore" the plastic as well as protect it from future fading.
 

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Apparently I'm in the minority here but I wouldn't use 303 on that. I used 303 on one piece of exterior trim on my Ascent and have regretted it since. Now that piece almost looks like it has an oil sheen over it. 303 looks great but you'd have to keep applying it to maintain that. It does work excellent on the interior.

Any guesses what the drip marks might be from? My trim has greyed some, though not as fast as me, but it doesn't have those streaks in it.
I'm not sure what some people have used on Chevy Avalanches, but if you ever see one with all the plastic that looks nice ask them.
 

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Apparently I'm in the minority here but I wouldn't use 303 on that. I used 303 on one piece of exterior trim on my Ascent and have regretted it since. Now that piece almost looks like it has an oil sheen over it. 303 looks great but you'd have to keep applying it to maintain that. It does work excellent on the interior.

Any guesses what the drip marks might be from? My trim has greyed some, though not as fast as me, but it doesn't have those streaks in it.
I'm not sure what some people have used on Chevy Avalanches, but if you ever see one with all the plastic that looks nice ask them.
Also not the most water resistant. First rainy day will pretty much wash it all off.
 

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My 2nd row window panels were turning a whitish caulky color over time. One of the panels was actually replaced a year after buying my Ascent but still turned color. At first I thought it was just crude or UV damage and tried various cleaning solutions without success. I bought some Cerakoyte but didn't get around to trying it. Instead I tried Mr Clean magic eraser sponge which did the job. I just went light pressure and made sure the sponge is wet. Magic eraser is a fine abrasive. I haven't tried on the body cladding. Here's the vid

I believe my whitish caukiness may be due to the car wash + wax solution i use built up over time
 

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2022 Ascent Touring, 7 Passenger - AWD
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you probably have some PB in the house. save you a trip to the auto store for some specialty product that costs much more. trust me, it works!
Thanks for the tip however I worry that it will also attract rats as peanut butter is used as a bait for attracting rats.
Peanut butter makes an easy rat lure a little spread on the car can serve as a highly attractive bait, since it gives off an intriguing odor (even after wiping it off) that rats easily detect.
I would prefer to keep rats away from my car rather than inviting them. Rats are known to chew on the wires and create havoc.
:)
 

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On my Outback, I used tire shine, which would last for "ages" (half a year to a whole year, even with me doing silly things).

Here's a vid of my Outback (and Ascent) from the day I came home from @Liberty Subaru with my Ascent. You can see its a little dull. Been about 10 months since I took care of it.


Here's some of the stuff I've done with it that has abused that black trim.
Tire Wheel Vehicle Car Hood


And finally, here's what it looked like, in the last five minutes of me owning it, after dressing the wheels and black trim with tire shine (I never did the roof rails and rarely did the window trim, so, you can see the difference between once a year on the rest of the trim vs never doing it).

This was a little over a month since the vid of it and my Ascent. You can see the big difference, after I'd wiped them.

I washed the car, let it dry, did a tire and a quarter of the trim with the same rag. Then did another tire with more tire shine and moved to another piece of trim with the soaked rag. Etc.
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That's exactly the brand I use. I bought it at AutoZone I think. Since then (thanks to those results), I use a bunch of their other products as well.
(never actually needed to use the leather cleaner - but bought it pre-emptively for the Ascent - still see no need)

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2021 Subaru Ascent, 2015 Kia K900
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That's exactly the brand I use. I bought it at AutoZone I think. Since then (thanks to those results), I use a bunch of their other products as well.
(never actually needed to use the leather cleaner - but bought it pre-emptively for the Ascent - still see no need)

View attachment 18389
I use their hybrid Ceramic wax, it's great stuff.
 
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