What liquid is inside the intercooler?

[DiHope]

The intercooler is installed between the turbocharger and the engine to cool the air entering the engine. It is generally air-cooled, and there is no liquid inside the intercooler. The heat is dissipated by the airflow passing through the intercooler while driving, similar to how a radiator works. Intercoolers are typically found only in vehicles equipped with turbochargers, as they are essentially supporting components for turbocharging, designed to improve the engine's air exchange efficiency. Symptoms of a faulty intercooler include: 1. Reduced power: Increased fuel consumption, slightly higher exhaust temperatures, and black smoke due to incomplete combustion, which over time can lead to significant carbon buildup on the valves and cylinder head. 2. Turbocharger malfunction: The turbocharger may fail to function properly, and oil may leak from the compressor side (though the turbocharger itself is not damaged). 3. Sand ingestion: Sand particles may be drawn into the cylinders, accelerating cylinder wear.