Perhaps the effect you're seeing is similar to what some "glaze" products do on paint. Stuff like Meguiar's #7. Which might work too. Interesting.
If you remove the anodize, you can polish the trim, but you'll have to do it very often. Like every few weeks, not months.
Good point Rick. I believe the blotching that we see is happening below the anodized finish between the aluminum and coating . The "Wesson oil " treatment is just that........ a treatment that will probably not holdout as a permanent fix but it will do for a band aid ....... if it lasts a decent amount of time it works for me. It is easy to do and can be done along side of detailing the car. Replacing moldings will be left to an overall paint when one blows the car apart for removal of the trim. I've been checking it daily and the results are positive.
"I'm Goin' the distance, I'm goin for speed." Cake
Anodizing is a chemical process that grows a layer of Aluminum Oxide on the surface of the Aluminum. It is normally a 5 step process much like the chrome process. It involves chemicals and electricity. The Aluminum Oxide layer is much harder than the base aluminum and is corrosion resistant. The only way to repair it is to go through the whole process all over again. Anything else is just an appearance top coating that isn't as durable as the original anodizing.
55 Chevy 150 Sedan with 350 and 3-2"s
73 Corvette Convertible w/modified L-82 350
76 Corvette Coupe w/modified L-82 350
37 Chevrolet 4 Dr Sedan with 454, TH400 and Tubbed Rear with 4 Bar Coil Over narrowed F 9"
A friend of my has had a lot of anodized aluminum stripped and anodized again. Although I think it's a 3 part process for him.
1st the anodizing shop to be stripped, but they don't do polishing, they normally do new work that had never been anodized before.
2nd pick it up and take it to the polisher
3rd pick it up and take it back to the anodizing shop for clear anodizing.
4th pick it up one last time
For car trim it would be interesting to see the trim done in some of the different anodizing colors to highlight or accent the paint scheme.