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Back again, I've been using a bottle of Johnsons "Rally wax" which is about ten years old or so...
Anyhow, although it gives a good shine, it doesn't seem very deep, I've heard good things about the new NXT wax from Meguirs, but some people have said it isn't that good on metallic silver? Will I notice any diffence from the other, if I'm not going to notice that much I won't bother, as the paintwork isn't brilliant anyway (stone chips, rust on roof)
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Metallic silver has to be the worst color for a car as far as waxing is concerned. It oxidizes about 5x faster than any other color and is harder to wax properly and get a uniform shine. After having a silver colored car once, I swore I'd never get another one because of this reason. Use of Meguire's Cleaner Paste Wax 2x a year will keep your car looking brand new. Turtle Wax color wax, matched to your paint color does a good job of hiding scratches and rock chips. GS-27 is great for polishing out scratches. You can get it at Walmart. I use it on just about everything.