Update: My 2011 Outback was towed in. Subaru said it was a Radiator leak. Replaced the radiator and re-checked the system. Said the system’s pressure was good and no leakage from the head gasket. The radiator leak was a “fluke” and should be good to go after. Now, I’m in a wait and see approach. Hoping it will be ok, but am losing faith in this car.