I am new to this but here goes. I inherited my son's Mazda mx6 when he died in a car accident in March. I have been using it as therapy to get thru the days since. I decided to do a rustoleum paint job myself and now want to get some info on clear coats. I want to know if a clear coat can be thinned 50/50 like the rustoleum and rolled on. I also want to add some metallic flakes also. Does anyone have any information that might help? Thanks