The drip rail mouldings are anodized. You need to remove the anodizing before they can be polished. There are a few ways, but I found good old elbow grease yeilds the best results. Start with about 400 or 600 grit paper and work up to about 2000 grit paper, then use a liquid or paste polish. Unfortunately they will need to be re anodized again or you will have to keep up on them as the bare aluminum needs to be protected.
I did my beltline moldings this way and I usually need to polish them twice or three times a season.
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Tod Hoffmann
1966 GTO Montero Red Hardtop - Holley EFI'd 462, KRE DPorts/Muncie 4spd
1990 Chevy 454SS pickup - Accel DFI/T56 6spd - Hot Rod Power Tour Long Hauler
1996 Chevy K2500 ECSB 'Poopy'
2002 Honda VTX1800C
2016 Cadillac CTS Premium
My project thread: http://forums.maxperformanceinc.com/...d.php?t=516826
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