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Old 07-30-2013, 08:51 PM   #1
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Observation on oxdizing of black plastic

Having owned five jeeps (this is the most expensive one yet, JKUR) the large fender flares seemed to have lost their black luster pretty fast, just applied a few coats of Mothers Back to Black and while helping, you can still see a "white'ish" undertone. Is there a better product to keep the black looking black or a technique someone has tried. Thanks,

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Old 07-30-2013, 09:00 PM   #2
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These are junk aren't they? Once they get muddy they're impossible to get looking clean again too. I put a few stripes on mine and after I beat them up some more I'll get an after market set and hope they're better. I'm sure there are better quality ones out there in the aftermarket...hopefully someone will chime in

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Old 07-30-2013, 09:00 PM   #3
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Quote:
Originally Posted by jeffashford View Post
Having owned five jeeps (this is the most expensive one yet, JKUR) the large fender flares seemed to have lost their black luster pretty fast, just applied a few coats of Mothers Back to Black and while helping, you can still see a "white'ish" undertone. Is there a better product to keep the black looking black or a technique someone has tried. Thanks,
Back to Black is what I use and it works great.
You may need two coats per the direction on the bottle and make sure that you really rub it in good.
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Old 07-30-2013, 09:06 PM   #4
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Anyone ever plastic coat the fenders to keep them black?
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Old 07-30-2013, 09:08 PM   #5
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Try Turtle wax ice followed by 303.
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Old 07-30-2013, 09:42 PM   #6
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303 is like magic. After post mudding bath, she shines dark black again. Never seen a product even close to it.
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Old 07-30-2013, 10:02 PM   #7
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I've had my jeep for a month and a half, and my fenders and bumper is starting to turn white. Its pissing me off. I used turtle wax ice. Both paste and liquid. I would swear by it. Not now. I don't understand. I used it on my YJ worked great. Maybe because or the textured flares on the JK.
Well not trying to sound like a salesman. But I thought I would try Detail Doctor. I saw it in Autozone. Just testing on front bumper before I do all. Getting new bumper this fall. So far it worked better that I imagined. Looks like I sprayed WD 40 on it. Nice and shiny. Just going to see how long it lasts before I do more.
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Old 07-30-2013, 10:25 PM   #8
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Many years ago a colleague and friend (plastics engineer) told me once this is due to the release agent during the plastic molding process.

I can't recall the exact reason.. not enough, too much. The bottom line, it was a major issue on the Chevrolet Avalanche many years ago - the reason we had the discussion. I was considering buying one and asked why some plastic turns white and others don't.

Our plastics division was able to blow mold tolerances way beyond the industry norm. The reason we were vertically integrated in that space.

The engineers know their stuff. Technically this is a manufacturing defect.

.
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Old 07-30-2013, 10:42 PM   #9
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Spray paint? I was thinking of doing that to mine. I have replaced both bumpers and will be getting flat fenders soon, I gave up on the spray paint idea to keep them looking fresh.
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Old 07-30-2013, 10:55 PM   #10
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Armor All Cleaner wipes. I don't care what the manual says, these work so great at cleaning and keeping the fenders looking like new. My fenders still look new after a year and quite a few mud trips. I used to have stuff ground into the texture before I started using these wipes. Remember, these are the CLEANER wipes, not the standard wipes. They leave the fenders looking like new with a matte finish. Nothing shiny or glossy here. Now I know folks will argue about these wipes, but I don't care. They just work. And they work great.
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Old 07-31-2013, 07:21 AM   #11
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I don't know about JK flares, but I painted my TJ flares with Krylon fusion paint two years ago and they still look like day one, except for where they are covered in mud. I would give that a try, my flares wwhere as white as my A$$. LOL
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Old 07-31-2013, 07:30 AM   #12
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I agree with those that said 303. It can be hard to find, so here's an amazon link: http://www.amazon.com/303-Products-3...ace+protectant

Also, make sure you follow the instructions. You MUST wipe it off after an hour or so. A little more work, but it is the only product that will work.
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Old 07-31-2013, 09:23 AM   #13
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Anyone try a heat gun on them yet? That process works on TJ fender flares...
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Old 07-31-2013, 10:53 AM   #14
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anyone try a heat gun on them yet? That process works on tj fender flares...
wd40
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Old 07-31-2013, 10:59 AM   #15
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Bed armor /thread
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Old 07-31-2013, 11:17 AM   #16
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Best product I've used was krylon fusion satin black spray paint. The plastic i s terrible and no matter how much mothers you put on them it's only a band-aid until you have to apply it again in 3-4 weeks.
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Old 07-31-2013, 11:21 AM   #17
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Quote:
Originally Posted by jeffashford View Post
Having owned five jeeps (this is the most expensive one yet, JKUR) the large fender flares seemed to have lost their black luster pretty fast, just applied a few coats of Mothers Back to Black and while helping, you can still see a "white'ish" undertone. Is there a better product to keep the black looking black or a technique someone has tried. Thanks,
I BET THAT YOU ARE REALLY CONFUSED BY NOW........
Everybody is giving you a different answer. They are all trying to help you from their experiences.

Now I will give you my 2 cents. I have tried several products when I had my 2003 TJ with a hard top. I experimented on both the fenders, which had turned out to have a grayish appearance and my black top had faded.
I tried the turtle wax ice, aerospace 303, somebody mentioned that it is hard to find, but Ace Hardware carries it, another product made for boats, but I can't remember what it was called and finally Mothers Back to Black.

I followed the directions to make sure that I was applying them correctly.
Back to Black is by far the best for you fenders and can be used on the bumpers.
For my hard top, the Aerospace 303 brought back the original appearance.

I will be using these same products on my 2013 Rubicon..........
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Old 07-31-2013, 11:59 AM   #18
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Another vote for 303.
I get it from Amazon
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Old 07-31-2013, 02:38 PM   #19
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Thanks Guys, I knew it was not just me; these newer fender skirts are much more textured then prior models and there is probably not a real fix other then a factory change in later models. I will just assume they will gray out over time while one tries their best with different products to delay the inevitable.
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Old 08-18-2013, 06:06 PM   #20
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I heated mine up with a heat gun and came out great
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Old 08-18-2013, 08:29 PM   #21
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So you just hit them with a heat gun? Sounds well a little scary
Really curious How long til they oxidize again?
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Old 08-18-2013, 10:18 PM   #22
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Originally Posted by jeffashford View Post
Having owned five jeeps (this is the most expensive one yet, JKUR) the large fender flares seemed to have lost their black luster pretty fast, just applied a few coats of Mothers Back to Black and while helping, you can still see a "white'ish" undertone. Is there a better product to keep the black looking black or a technique someone has tried. Thanks,
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Old 08-18-2013, 10:48 PM   #23
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Was considering swapping painted flares for black plastic but I may keep them on now. 303 works great on spa cover but never tried on auto parts.
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Old 08-18-2013, 11:11 PM   #24
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I've stopped buying expensive plastic treatment stuff and switched exclusively to WD40. Works wonders and it's super cheap. Just spray it on a rag and rub it in. Also works well for cleaning suspension components and undercarriage stuff.
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Old 08-19-2013, 09:50 AM   #25
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Dont feel bad, the black plastic textured wheelwell trim on my wife's '13 BMW is all blotchy from mud/dirt, just like the JK fenders..

I have 303 around because I use it on my boat seats, great stuff but it doesnt last long on the plastic. Only way to stop the fade is keep it out of the sun, since thats not an option I just live with it..
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Old 08-19-2013, 01:21 PM   #26
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I've continued my own search for what might keep bumpers/door handles/etc looking, well...."black".....

So far my biggest disappointment is the 303 stuff. Whatever 'aerospace 303' stuff Amazon has must differ somehow from what NAPA sells.

So far it has does nothing I can tell I've even used anything. I've gone through about 1/3 of the bottle of the stuff I got and so far it's like the ex-----long on promises & zippo on performance.

Of the half dozen trial goo I've used, "Back to Black" has worked better than the rest.

Will give WD a trial too now, since I've got plenty around anyway.
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Old 08-19-2013, 02:50 PM   #27
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Originally Posted by JeeperJake View Post
I've continued my own search for what might keep bumpers/door handles/etc looking, well...."black".....

So far my biggest disappointment is the 303 stuff. Whatever 'aerospace 303' stuff Amazon has must differ somehow from what NAPA sells.

So far it has does nothing I can tell I've even used anything. I've gone through about 1/3 of the bottle of the stuff I got and so far it's like the ex-----long on promises & zippo on performance.

Of the half dozen trial goo I've used, "Back to Black" has worked better than the rest.

Will give WD a trial too now, since I've got plenty around anyway.
303 comes in a cleaner and also a conditioner. I honestly have never used anything that works as well as this stuff. Use it on boats, cars, and planes. On my flares after hard mudding, I let it soak in...apply it very liberally and don't wipe off. It lasts until my next mud venture. It does sit in my garage which helps Im sure.
Troy
Btw, this pic shows what the diff looks like...between 303 and the areas I cant reach. And this is a couple weeks after app.
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Old 08-19-2013, 02:57 PM   #28
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back to black made them look good for a while but they quickly looked trashed again and it would take a lot of money to keep them up that way.

if they dont look perfectly black use more back to black. i used 5 or 6 coats and man, they looked brand new. also did the bumpers, hood latches, door handles, fuel hole

you can get them line-x'ed for a decent price. call line-x shops.
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Old 08-19-2013, 03:57 PM   #29
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Krylon Fusion Satin worked great for me. Mothers, 303, and everything else suck -- they just don't last. I live in Florida and it rains every other day. Even the morning dew would leave tons of streaks and splotches in 303. I sprayed my fenders with Krylon and decided to take a picture of how good it looked. I noticed the hood strap things were still super faded so I prepped and painted them. It's held up great and hasn't faded at all yet. For comparison:
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Old 08-19-2013, 05:09 PM   #30
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^^^

That looks great! You said you "prepped" the hood latches, what did you have to do before hitting them with paint?

EDIT: to ask which black Krylon you used. Thanks.

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