RE: Waxing ''aluminium'' stock spoiler... 2018 BRZ
 

Greetings, I have a 2018 BRZ Sport-Tech RS (Canada), the ''black'' aluminium spoiler seems to be ''fading'' a little... actually, turning whitish... Is there a ''special'' type of wax that can be applied to bring back the original matte black look? TIA for the advice!

You can wash the spoiler with a microfiber wash mitt & a strip car shampoo like Adam's to remove any contamination &/or (polish/wax) buildups that "whiten" the black finish then protect it with a sealant like Turtle Wax's Seal & Shine, TW Ceramic Spray Wax, TW Graphene Flex Wax, or Turtle Wax Hybrid Solutions Ceramic Acrylic Black Car Wax that will enrich the black finish.

Chemical Guys JetSeal has worked really well for me on this part. Alternatively you can ceramic coat it and it should stay nice for long time (you can for example get 10ml of CQUARTZ which is plenty enough to cover most of black trims and spoiler on your car).

Got a pic of whats going on with the spoiler?