Three problems related to radiator have been reported for the 1999 Subaru Outback. The most recently reported issues are listed below.
Head gasket failed on 1999 Subaru at 38,000. Car was maintained religiously. Subaru recall was never sent to me. I was told my car was the 'wrong phase engine' to be covered under warranty. Car had overheated 3 months earlier. Subaru flushed the system and added 'special coolant lubricant'. This was worthless. I was told it would cost $2000+, even though my family has purchased 4 Subaru's from the same dealer. After a lot of screaming and yelling, they replaced both gaskets, radiator, thermostat and water pump. I ended up paying $250. Dealer, (wakefield surbaru, wakefield MA. ) helped convinced Subaru corporate to foot most of the expense. Later when Subaru oil filters failed (leaks) and after more screaming and yelling with this dealer ship, (after they said I was making up the leak problem) I've changed dealerships who has a more professional service center.
The vehicle overheated and was towed. The radiator was replaced. Vehicle broke down a second time. The vehicle was serviced again and the head gasket was found to be defective.
Engine overheated after a 30-minute trip. Temp gauge read normal. Thermostat, water pump, radiator, head gasket all ok, but exhaust valves and cylinder walls damaged beyond repair.