Good day...wanted to give you a heads-up to a costly problem that I caused.
I bought some new air valve covers. They were red in colour with a red Subaru insignia. Looked great!
Last week my low tire pressure light came on. I was due for an oil change so I brought in Friday. Well those new aluminum covers did not interact well with the metal of the air valve stem when mixed with with salty-snow from the road.
Dealership could not get them off!
They tried every crazy-arse youtube trick out there. These were not budging. Actually damaged 2 of the valves in the attempt. So I had to buy a new set of tires!!! The "old" set only had 2000 miles on them!!! Two of the air pressure regulators had to be replaced too. (But the dealership covered them for me.)
SO DON'T USE ALUMINUM AIR VALVE COVERS!! (But if you do, use some kind of water-proof grease, or a plumber's tape.)