I use a touchless car soap, Bilt-Hamber Touch-Less Pre-wash and then Bilt-Hamber Auto Foam. I put the first one through a foam cannon and then hand wash the second with a through clear water rinse at the end. Blow dry most of the water droplets off and finish up with a hand dry with a Gyeon Soft...
At 72 and after owning 60 mostly euro-cars over the last 55 years, I'm tired of working on them to keep them going. My two current BMWs (a '08 750i and a '08 X5 3.0si) take most of my spare time and a bit more to keep things where they should be. So I'm done with at least the X5. A bit over a...