How to clean metal car trim?

[quyeno]

Hi

I'm looking for advice on how to clean metal window trim or metal coated plastic, I'm not sure what it's exactly on my 2017 Sharan. The finish is more like polished steel/aluminium rather than chrome. There is tarnishing on the trims and on the roof bars, it looks like it's oxidation, water drop staining or both. I've used 0000 steel wool and Mother's metal polish on them which has removed most of it but there's still some residual tarnishing left. I've tried vinegar and it's not helped. I haven't got a polishing machine so would prefer it suggestions can be done by hand. Has anyone tried Maguire's polishing compound or Chemical Guys Light or Heavy Metal Polish for this issue?

It looks like this....

https://mbworld.org/forums/s-class-w222/787530-chrome-window-trim-look-like-water-spots.html

Thanks
Q

 

[quyeno]

A couple of YouTube videos to start you on your quest for trim perfection:

https://www.youtube.com/watch?v=rbG81CF9X4g

https://www.youtube.com/watch?v=bMirCYO5qVI

Thanks for links, I've seen those one before but unfortunately haven't got the tools. Trying to spend money on tools I would probably not use again though.

 

[quyeno]

Thanks for all the replies. tried WD40, coke and brown sauce! none worked. I ended up buying a makita multitool after all for other DIY jobs so will give the advice from one of those youtube vids a try.