For 1990-2009 cars

Cause | Correction
--- | ---
Failed cylinder head gaskets and/or cracking or other damage to the cylinder heads and engine block cooling system passages. Coolant consumption may or may not cause the engine to overheat. |

• | Perform a cylinder leak down test. Refer to Cylinder Leakage Test.

• | Inspect the cylinder heads and engine block for damage to the coolant passages and/or a faulty head gasket. Refer to Coolant in Combustion Chamber.

• | Repair or replace, as required.