I wouldn't spray a clear coat on your polished frame. The risk of oxidation under your lacquer or your frame turning a bit "yellow" looking is not worth taking imho. I would recommend the same as FairfaxPat.
I never use aluminium specific polish, but that's because I still have a lot of "normal" metal polish. I don't even know if there is alu specific.
I never use aluminium specific polish, but that's because I still have a lot of "normal" metal polish. I don't even know if there is alu specific.