Exterior Black Plastic Restoration

Julian24110

Member
 Cornwall
Next job is to get the black plastic where the door mirrors mount back to black. There are lots of products on the market, most look to do a good job on interior trim but reviews indicate they don’t last long on exterior trim. Any recommendations for this?
 
Based on what I had read on here I bought this to do exactly those parts on my previous E86:- https://www.amazon.co.uk/gp/product/B00IOMDUN0/ref=ppx_yo_dt_b_asin_image_o00_s00?ie=UTF8&psc=1

Not cheap, but it did a good job, lasted well and I still have quite a bit left (maybe I need to do them on my current one)!
 
Nothing for black plastic will last. Period. All you're doing is applying a temporary and soluble veneer onto an unpermeable plastic layer.
That said, I renewed my scuttle with a 50/50 mix of funiture polish and baby oil back in summer. It looks great and lasts about 3-4 weeks before re-application is required and costs buttons. Smells like a dodgy antiques shop however.
I posted about it a while back somewhere with photos when I was fixing a water-ingress problem.
 
Thanks, that’s pretty expensive for 2 small pieces of plastic, but if that’s what it takes...

I was watching a ‘Chris Fix’ video on YouTube last night where he was using ceramic coating for the same thing, which also looked expensive!
 
https://www.ebay.co.uk/itm/Auto-Finesse-RVT250-Revive-Trim-Restorer/352169224374?epid=2150198970&hash=item51feebe8b6:g:GDkAAOSw47dZyPCY

or https://www.ebay.co.uk/itm/Carpro-PERL-WATERBASED-SILICON-OXIDE-COAT-500ml/162932373129?epid=1343919138&hash=item25ef86b689:g:lr8AAOSwHuJdkG5d
the Perl also works well diluted on tyres :thumbsup:
 
I also have this same question. I have heard what [ref]Chris_D[/ref] has said too.

I was maybe thinking about removing the mirrors, masking the mirror and cover, preparing the surface and spraying black + a few layers of clear coat. Would this be a viable solution you guys reckon? Might look a bit overly shiny is one issue I can think of.
 
gtechniq c4 permanent trim.... Excellent product. You'll get a couple of years out of it and one bottle is good for a good few applications .
 
Julian24110 said:
Thanks, that’s pretty expensive for 2 small pieces of plastic, but if that’s what it takes...

I was watching a ‘Chris Fix’ video on YouTube last night where he was using ceramic coating for the same thing, which also looked expensive!

You can treat alot more than two bits with it matey.

I did my E86 so forgive me if I mention bits you don't have but you can also do the skittle (below the front window), the plastic below your lights at the front, your Arial, all the rubber window seal. Then lift up your bonnet and go to town on the engine bay.

Don't do any interior bits with it and remember that the key with it is preparation. Really good clean 1st.
 
I use the Autoglym Bumper Gel on the black plastics and it works a treat, including the under bonnet stuff.
For the lower grilles on the front bumper, with all those tricky nooks and crannies, I spray with Autoglym tyre dressing and leave it for 20 minutes. Then a quick spray with a hose gets any remaining white bits out.
 
Beedub said:
gtechniq c4 permanent trim.... Excellent product. You'll get a couple of years out of it and one bottle is good for a good few applications .

Agree completely. Did mine 2 years ago and they still look nice new, a few very small blemishes coming through, but easily fixed with a top-up.

A lot of the others are just temporary, this is at least semi-permenant.
 
idej_z4 said:
Beedub said:
gtechniq c4 permanent trim.... Excellent product. You'll get a couple of years out of it and one bottle is good for a good few applications .

Agree completely. Did mine 2 years ago and they still look nice new, a few very small blemishes coming through, but easily fixed with a top-up.

A lot of the others are just temporary, this is at least semi-permenant.

Agree on the c4. Brought the mirror and scuttle trim up like new and I got a couple of years out of it with no maintenance needed.
 
c4 is fantastic.... he ceramic element fills the pours and dyes it hence the more permanent solution. really great stuff.
 
TheDan said:
I also have this same question. I have heard what [ref]Chris_D[/ref] has said too.

I was maybe thinking about removing the mirrors, masking the mirror and cover, preparing the surface and spraying black + a few layers of clear coat. Would this be a viable solution you guys reckon? Might look a bit overly shiny is one issue I can think of.

To me it seems like the smart thing to do, as it's consistent with the rest of the bodywork (you'd hope), and shouldn't require additional upkeep over and above your usual washing/cleaning approach to the car. But as I don't see it mentioned much, I've always wondered if I'm missing something obvious?
 
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