I have a 2003 Miata that was driven in Florida for the last 2 years. Over the last year, the interior convertible latches, springs, and screws have developed some sort of white crust/oxidation on the exposed sections. It's not just limited to the interior, since I have also found that some of the screws in the trunk area also have this oxidation. I have tried putting some WD-40 on the affected parts, and it does help, but it doesn't completely remove it.
My Miata has been well maintained and has never experienced any water related damage. When it was last in the shop, I asked the mechanic to check the undercarriage/frame for any evidence of rust and none was found.
Has anyone else seen this on their vehicle? If so, any clue on what causes this or how to remove it?
Thanks!