Don't wanna start a huge argument over dishsoap here, but... Dawn will strip your wax and eat your clear coat. It's just not good. I used Dawn for years until I decided to switch to wash with car soap. The wax seemed to bead water much better for a longer time.
I donno, just my opinion on the whole thing. Bear in mind I'm running on no scientific facts here, just word-of-mouth and own observations.
