One problem related to radiator has been reported for the 2006 Subaru Outback. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Subaru Outback based on all problems reported for the 2006 Outback.
Found coolant black and possible overheating from head gasket failure in result radiator was exposed to high heat and cracked. Combustion pressure had entered cooling system and caused over pressure of cooling system. Recommend leak down and compression check of engine to determine if internal damage has occurred. Customer has two options, replacement of head gaskets if no other findings internal are found or replacement of engine complete. Turbo may also be damaged and needs inspection also. Replace rear brake rotors and pads, lube back of pads and hardware pins with anti squeak paste. Adjust emergency brake system to factory spec. Road test for noise and seat new pads to rotors.