ok me and my friends were watching my other friend drive his truck...so someone had the idea to throw a snow ball at it and so everyone did lol... a snowball hit the cooling head like 2 or 3 times so few cause it was going preety fast i couldnt even peg the the thing..... but anyways he claims it could screw up his whole engine and is saying its broken could a little snowball actually screw up the engine i know this sounds odd but please help