Ken_P wrote:

The radiator is dropping heat evenly across it, so I I don’t think anything is clogged up. It is a newer core - I’m starting to wonder if the core doesn’t have the right capacity? Has anyone done a flow check with the radiator in the car? I’m thinking I could dump 5 gallons in the top of the radiator and time how long it takes to come out the bottom, starting the stopwatch when water first came out? Would that work?