I'm going to use a moisture cured urethane on the golds. POR-15'* Stirling Silver. It is actually a topcoat, but I found out that in industrial painting, if they can't clear a metallic surface (rust, paint, oxidation) they slap on an MCU as a primer.
The MCU doesn't bond mechanically as much as the isocyanate rust paints (ie POR-15 and Eastwood). Those drive deep down into bare and oxidized metall. They sound great for rust (and fresh metal) as they actually suck out any moisture from the rust as they cure. They would be great for wheels, except they don't like paint. The golds are high metallic coated, but there is still some "paint".
I'm also going to do my '95 5 slots with Steel-It primer and epoxy. they will be challenge because they are a combination of painted surface and polished alloy. Interesting thing about epoxies. You have to be careful which one you use. Some soften at 160-170* even after a full curing and can take on particulates from the road. Or cloud up the clearcoat, if it was applied.
I'll take pics as i go. See how the products do, and look.
1995 SE ..Green and Rattle Can...234K mi...Bonnie (she'll outlive me)
1998 SSEI .. White ..119K mi...Evey
1996 SSE ..MajTeal..157K mi...4/12- Dealer trade full of Lucas Trans fix