My wife has a Maroon flake paint on her Mazda Tribute. I wash it early in the AM, but normally in the sun. I have used Mequiars Detail Soap, 3D wash, Turtle Wax (orange bottle) and now some stuff called purple passion (cheap, low sudsing). I can rinse and rinse and rinse and I still get soap streaks. I wax it every weekend. Anything work or rinse better in the sun? Thanks :usa