CG- VRP. I like the CG undercarriage dressing but I try to kill as many birds as I can with one stone. I cut VRP 1:1 with distilled water for interior vinyl and plastics, leather. I use the same for the wheel wells and vinyl rag tops. More visible vinyl, plastics, and tires I use 1 part water two parts VRP. It makes it thicker for the outside. The trick is put it on let it sit and dry to a shine then buff the excess off. It will not run off in the rain if you buff it down. If you don't buff it will run in the rain it is a water soluble. So let it bond to a clean surface and buff off the excess. It leaves a nice satin deep black shine after the buff.