I have a 09 Subaru, which is one of the model years known for head gasket issues. I have been getting used oil analysis (UOA) to try to make sure I would detect a head gasket leak. However, I started loosing coolant earlier this year (May or so) and have done two 4,000 mile intervals since then. Neither report showed any sign of coolant contamination.
That said, I can't find a coolant leak external to the car. So my question is, can coolant leak into the cylinder and get pushed out the exhaust without leaving a trace in the UOA?
For information, I bought the car used at around 160,000; I don't know if a previous (I'm the 3rd) owner did the head gasket at ~110,000.
That said, I can't find a coolant leak external to the car. So my question is, can coolant leak into the cylinder and get pushed out the exhaust without leaving a trace in the UOA?
For information, I bought the car used at around 160,000; I don't know if a previous (I'm the 3rd) owner did the head gasket at ~110,000.