I just got done cleaning the underside of my RV hood. It was dirty and I didnt like the way it looked so I washed it and waxed it... Cleaned everything else under there too..
I want to spray down the radiator too. I know road grime etc can decrease the cooling efficiency of the AC condenser and the radiator. Not sure How To do the radiator though.. Maybe a wand that I can use to spray from the inside out?