I used learned, and used, the above method for my '88 Chev. Beretta, and then my (now departed) Lincoln Mark VIII. The Mark VII had a really dull, faded black (with clear coat) paint job when I got it. Did some research, and latched onto the Meguiar's+Meguiar's #36 wax at first, then went to the Meguiar's/pure carnuba method detailed above. Car looked almost new when I finished the process the first time around. Kept with it, and the car just kept getting better and better, the black seeming to get better/deeper each time. I ended up having to stop, as the clear coat started to peel off, and I couldn't use the process anymore.
I looked up Collinite 885, and it is a marine wax. It carries this warning, taken directly from the Collinite 855 Technical data sheet:
"Only apply to a CLEAN surface; washed, and free of blemishes, discoloration or other imperfections like swirls or scratches. A clean/properly-prepped surface will ease theapplication/removal process; improving spread and increasing durability of wax’s bond"
It seems to form some sort of chemical bond with the paint, which I am not sure I am comfortable with. It also states that it is good for 5 MONTHS, not 5 years, as per their site.
Collinite does make a wax, called No. 915, Marque D'Elegance, which is a pure Carnuba wax, and looks extremely good.
As for Collinite No. 855 Leather and Vinyl Wax, i"m not really sure I can get my head around it. Leather and vinyl don't have the same chemistry make up (leather=dead animal skin, vinyl=petroleum chemical soup), so if a product is effective on one, I don't see how it could be effective on the other. They talk about feeding vinyl, but as far as I know, you can't feed vinyl, you can only feed leather due to its losing its inherient oils.
Not looking to start a flame war or anything, just trying to work out what is the best to use.
Kostas