Alright everyone out there at no point in time was there any pressure washing happening the soap has no force behind it just coats stuff, he took the sprayer of soap it was just a stream of water, and used compressed air to dry some areas. When it rains or you hit puddles water gets all over your engine. They were designed to work with water on them. Secondly dirt on your engine is not better than this and enough dirt can make heat loss worse and lead to overheating, along with getting in belts, clogging up radiators, dirt and other metals building on batteries and wires, and anything else. There is nothing wrong with this video.