With a recent radiator flush being done by a local repair/service shop. Would you say in your opinion they should have flushed the line through the heater core?
Most places do not flush the heater core separately. Most cooling system/ radiator system flushes are either just draining the system and filling it or hooking a machine up to the lower or upper radiator hose and flushing the system. It dosent put pressure through the heater core though.
Thank you for your help, it's much appreciated.