I applied cquartz on my wife's car a month or so ago. I had a bit left over, so last week I applied some to the roof of my truck. Of course, right after that, opti coat shows up as the VIP special, and I can't pass it up. I intend to use it on my truck, but I'm not sure what to do about the roof? I don't suppose the opti coat be applied over the cquartz, can it?
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