hey guys, this is eric who posted the article on DI
what I meant by the comment of "you dont want to just layer..." was this:
layering wax upon wax upon wax will still only have one true layer of wax bonded to the paint. The rest of the layers are going to be removed more easily since they arent bonding to anything solid, just removable wax. So those people who say they have 13 layers of wax on the car, they dont. They just applied it 13 times, but removed a little of the previous layer by adding the second layer. I am not talking a lot of removal, but a tad.
Waxing once a month, you are not giving the wax a true bond to the paint. Think of all the washings, the driving conditions, the environmental fallout that is on the car that has bonded to the paint (the stuff that just doesnt come off the paint with ease while washing). where do you think that is going if you dont "prep" the car for wax? Its going to stay on the car while you wax over the top of it, leaving the wax still not bonding to the paint. Thats is why a pre-wax cleaner is a good option for those who have the time. The general rule is waiting 12 hours or so between layers and layer them back to back for a "good 3 layers protection".
Hope that clears some things up for ya...