i always found if you mix 2 parts t-cut with 3 parts super resien polish and a splash of life shine works a treat stole this method from the valeting team at gilders the local vw dealer as i went to school with them and there cars are the cleanest in town by far
but i still like going from rubing compond,t-cut,colour back,mer,supper resien,wax when i get a bad car in need of tlc all by hand its a bit over the top but i got asked if i had a respray or was it just a diffrent car