Not Ranked
There really would be no way to tell if the extra coats had been applied. Sounds like a great way for a dealer to pocket extra money for no effort.
Also, "double coats" is an old painter's term for when you are spraying on color/clear and you overlap each coat 50% with the prior pass. So you are essentially spraying the same part of the car twice, once with the first pass and then again when you bring the gun across the other way. I personally have always viewed this as one coat, but there are still people out there that call this technique a double coat. Either way, you can only layer on so much material before you run into problems down the road. Plus spraying on extra clear only makes sense if you're going to sand off more of it (i.e. get the stripes even with the color).
-Dean #747 (love my factory finish)
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