RAM 1500 2003 4.7L Crew Cab 203000 km
Coolant is disappearing from the reservoir immediately as I fill it, No visible leaks from the truck anywhere. I'm not seeing milky oil when checking it so i don't believe it's a head gasket issue, I have no idea where my coolant is going. When i start the truck it sits on cold on the temp gauge for a good few minutes without moving then quickly shoots to overheating.