Originally Posted by
mackdog
got a friend with a 2005 6.0 F 250, its been losing coolant lately. I dont think it has head gasket or head problems because there is no loss of power or white smoke. There are no visible leaks in the engine compartment, Im all out of ideas and need some advice......
mine was doing the same thing, dealer said head gaskets but i questioned that diagnoses..so i looked at it myself and the radiator cap was defective. i held no pressure..so i replaced it with an aftermarket one and haven't had a problem since..knock on wood