I have been using a product Called Aero Cosmetics that was on display at the international F.R.O.G. rally last year. I saw a Cardinal that had this product applied and it really shined. So I went home looked this up and read the reviews on it. I did order this product and it really works.
I also ordered some cleaner products that seem to work for me and they could work for you also. One is called Safe Solv and the other one is Belly Wash. I would try the Safe Solv first as this seems to be the product that might work the best for your needs.
I have used the Wash Wax All and the Wash Wax All Degreaser and they really do work. In fact I wash my truck with the Wash Wax all and this does shine the truck and has bead up all winter long so far.
2016 34RL CC; 2008 Ram Mega Cab 2500HD, 6.7L, 68RFE 6 speed, 4X4, Smarty S67