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91-560SEL - 99 - corvette coupe LS1 - 07 Cadillac STS4
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26 Posts
Discussion Starter · #1 ·
I have searched the entire site looking for suggestions on how to clean the clear "white" plastic section (reverse lights) of my taillight assembleys. With age, they have yellowed. I assume I will need to remove the taillight assembleys but I don't have a clue what to use to clean the yellowing from the inside?

Anyone have any experience here?
 

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W140 '93 500 SEL
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1,005 Posts
There is nothing you can do to remove the yellow colour but you can polish the plastic with cery high grit sand paper.(over 2000)
 

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91-560SEL - 99 - corvette coupe LS1 - 07 Cadillac STS4
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26 Posts
Discussion Starter · #3 ·
Thanks Peter,

I already polished the outside. The problem is inside and as you know that plastic is not smooth, there really is no way to polish all the nooks and crannies inside. I was hoping for a product I could spray on.
 

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1986 500SL, 1990 300SEL, 1997 SL500 sport, 2005 Passat TDi Estate(sold)
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27 Posts
Hi, curious if anyone has any further thoughts or remedies to this issue? Thanks
 

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1989 560 SEL W126
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263 Posts
That's some old school hardware.
 

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90 420SEL 240,000 miles strong
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557 Posts
The plastic is oxidizing fron the outside, not the inside. Go to autozone and buy the 3m headlights restoration kit from autozone and use it on them (by hand). It will remove the yellowing, on the first grade of sandpaper, sand untilk the residue running off turns from yellow to white. What's happening to the taillights is the same thing that happens to modern headlights on most cars.
 

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1986 500SL, 1990 300SEL, 1997 SL500 sport, 2005 Passat TDi Estate(sold)
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27 Posts
Thanks guys for the helpful tips. Anyone try meguiars plastx? I am going to give it whirl and report back.
 

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Premium Member
1991 560 SEL, 1989 560 SEC EURO, 1989 560 SEL and 1985 280SE Euro
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423 Posts
You can also use Meguiars PLast X to really clean up old dull wood clear coat. DONT USE ON DAMAGED WOOD however!
 
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