hi, I recently bought myself a 2007 vw golf city (gasoline) I almost immediately started having issues with the car overheating. coolant loss due to boiling over the reservoir. I first took the car to a vw dealership, they replaced the master fan and told me it was fixed. it was not. I then took it to a local mechanic and I have replaced the the reservoir and cap, thermostat, radiator,the system has been flushed, yet still the lower radiator hose is always stone cold, and the upper hose is hot. I also had the pump checked which seems to be working fine. At this point even my mechanic has no clue what it could be. I don't believe its a blown head gasket as there is no white smoke, no milky oil, and I don't see bubbling in the reservoir when starting and running the car. it does boil over the reservoir however and steam up. The temp gauge goes up to almost 130, however when I place my hand on the engine after, it doesn't seem really hot aside from the boiling coolant. I'm really hoping one of you could point me into the right direction, because this is stressing me out so much.
thank you for your time!