Ok. so earlier today I posted a pic of some sludge in my radiator. Since then I took it off and I am going to replace it. the sludge was mainly on the drain plug. Inside the radiator al little rusty color. My neighbor jokingly said it is your head gasket. So, paranoid me check of the internet and that is a sign of a blown head gasket. However, I do not think that would be the case. Car throws no smoke at all. Oil is clean and runs great. So I shouldn't have anything to worry about right? lol. Come on someone help me be a little more positive so I can sleep tonight lol.