We have a 1999 dodge ram 1500 5.9L V8. My husband recently had his engine remanufactured. He got the engine back into the truck and started it, but it would not idle. It died as soon as he took his foot off of the gas. The truck was running maybe two minutes total When he checked the oil, he found a thick, milky substance on the dipstick. I have always been told that indicated blown head gaskets. Is there anything else it could indicate? How can he have blown head gaskets when he just paid $2100 to have the engine remanufactured?