458 canard appears to be stained, please help

A vile canard.

 

I think the approach is more toward covering the stains than removing. Look into black trim restoring products (e.g., CG’s black on black). The non-permanent ones are fairly low risk to use, and some might provide decent coverage.

 

Your detailers don't have anything to try?

 

may be "WD 40"

 

It resembles splashing from liquid wax and buffing machine - maybe first try a wax removal product.

 

Definitely looks like a stain. I would try some tire shine/dressing or whatever you have available first. If that works, you can test out a more "permananet" coating like Cerakote.

If that doesn't work, you can try a mild abrasive (toothpaste would work) in a tiny spot assuming you don't have any car polish/compound.

It looks like some sort of bug/tar remover was allowed to drip on the canard and stained/removed the exterior finish.

 

Depending on how long its been there you can try out Dr. Beasleys products for matte finishes. They have great stuff and it may help. Tough when working on matte areas because there is only so much you can do. You may be able to lighten up the staining and then get matte ppf applied to them to see if you can get the stains hidden.

 

Try a Mr. Clean Eraser - it's abrasive so try it on a hidden part of the canard first.

 

Great service.

 

Have you had any luck in removing the stains on the canard my friend?
Have you an inexpensive car wax like Collinite or Bilt Hamber Speed wax?.
Using a soft cloth gently rub the effected area, ideally better in the sunshine so the wax is warm. DO NOT! work it hard, simply round and round gently thats all!.
See how it reacts with the stain?
Simply wipe off, DO NOT buff - you are wanting the wax to act as a cleaning agent thats all.
I use this method on areas that have trapped Autoglym Super Resin Polish residue, as you know this goes white and hard after time.

 

An old trick that works. Great post John.