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      04-29-2007, 06:02 PM   #51
picus
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Drives: e92 SG 335i Coupe
Join Date: Jun 2006
Location: Toronto, ON

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Z5 and Z2 are both just sealants. Neither is a polish, and neither will remove swirl marks. Z5 will *hide* swirl marks, because it has fillers in it.

I use Z5 on dark colored cars because, in my opinion, it looks better. It has a deeper, more carnauba-esque look. I do not generally use it because it fills, that's just something it happens to do. I use it for the look and durability.