How does the air get trapped inside the engine?Last Updated: July 25, 2019
Many newer model vehicle designs have lower hood lines and are more aerodynamic, which means that the engine is positioned higher than the radiator. While this promotes a more attractive, sleeker look, it creates a problem within the radiator.
Basic physics tells us that water, which is part of the engine coolant, seeks a natural level. The coolant cannot be drawn into the engine efficiently because air exists between the upper portion of the engine block and cylinder head(s).