The P0118 code means that the engine control module (ECM) has detected a voltage signal that’s too high from the engine coolant temperature (ECT) sensor (below). In practical terms, the ECM believes ...

As engines get very hot, coolant helps distribute heat to help prevent overheating and engine damage. It also adds antifreeze protection and acts as a lubricant for some of the engine’s components. If ...

Red coolant is designed for modern cars with aluminium engines, lasts up to five years, and should never be mixed with green coolant. Green coolant is for older vehicles, usually lasts two years, and ...