I have a black 04 Ram Quad and you know how hard it is to keep it clean. Every wash product I have used left spots on the truck unless I spent time drying it off. I have used the Mr Clean Spotless car wash product and I am definitely very happy with the results. I get about 3 washes out of each bottle, mind you I also wash under the truck as well, a garage creeper works wonders if you have the 4x4...lol. I have 5000 kms on my truck now and it still looks like new.

 

I forgot to add that I also bought a electric Husky 1750 PSI pressure washer that I pre rinse my truck with to remove as much dirt as possible. It helps to reduce the light scratches that you get when washing the truck, especially a black truck where every scratch shows.