Subaru Outback repeated overheating issues and head gasket damage after multiple repairs at dealership on Subaru Outback

Some Subaru Outback owners report experiencing repeated overheating issues and head gasket damage, particularly in the 2010-2012 models. These owners note symptoms such as fluctuating temperature gauges and persistent overheating, even after replacing components like the radiator or thermostat. A blown head gasket is a serious concern that can lead to significant engine overheating, as it is crucial for sealing the engine block and cylinder head to prevent the mixing of coolant, oil, and combustion gases. Initial head gasket failures may stem from factors like a failing TCV, which can cause overheating and warping of the heads. Furthermore, some owners find that overheating after a head gasket replacement may indicate major engine damage, such as a cracked or warped engine block, necessitating a thorough inspection. Additionally, if the head gasket is not sealed properly, hot exhaust gases may enter the cooling system, or coolant may leak into the cylinders, exacerbating overheating issues. Continuing to drive under these conditions can lead to further damage, including warped cylinder heads.