About 2 months ago I washed my Gray 2004 Rodeo with dish washing liquid to remove the old wax I had put on about 2 more months before that which was NXT WAX . After I washed the car I clayed and waxed with NXT 2.0 , I had run out of the regular NXT. I was really satisfied with the results I did the same to my brother in law's Blue Mazda 6 and his jaw just fell and started drooling with his results . That's why I decided to purchased the DC PAINT CLEANER and the DC POLISH to step it up a notch this weekend on my Rodeo and I know I wont be disappointed with Meg's . Now my question is should I wash my or any body else's vehicle with dish washing liquid to remove old wax before doing the 5 step system ? This will be the first time I use the DC PAINT CLEANER & DC POLISH maybe someone can give me some advise on what or what not to do .