Took the truck to the muffler shop this morning. .. finally time for it to hit the road! Was waiting on new radiator to come this afternoon also. On the way home truck started acting like it was running out of gas then died. I knew it had gas (fuel guage and just stopped). After pulling over I checked the oil and it was milky. Radiator had water in it and temp guage was only reading 190. Do I have a blown head gasket? Am I gonna have to pull the head? This is like a bad dream considering new radiator is coming TODAY! ANY suggestions would be greatly appreciated