I use to keep my car detailed. I actually changed the color of the car with polishing twice a year.
Eagle One was my product of choice. I can't find it in the stores anywhere.
I've perhaps mentioned in the past wrecking and totaling my truck. I paid book value of $6995 for it, drove it for 2 years, and the insurance company gave me $8500 for a loss. I have a list of the cleanliness that added up to the extra value. 2 days before I totaled it, I was wheel deep in mud while 4 wheeling. Cleaned the next day, and wrecked and totaled the following day.