Honestly..
The Servo Handywash.. keeps my car clean.
Manually wash it, then take it through the auto wash after.
Chamois off what's left over..
On the interior i use an armoral sponge after vaccuuming and wiping everything down with a slightly damp cloth.
Use to use a waterless wash which was always interesting.
The window cleaner that came with that was insanely good.