* Water pump: A very common cause. The water pump is often located on the front of the engine, and a failing seal or impeller can lead to antifreeze leakage. The location on the *left front* strongly suggests this.
* Thermostat housing: If the leak is near the top of the engine, a crack or failing seal in the thermostat housing is possible.
* Radiator hoses: While less likely to be solely on the left front, a hose connection (upper or lower radiator hose) could be leaking on that side. Look for cracks, loose clamps, or deterioration of the hose itself.
* Engine block crack (less likely): A crack in the engine block itself is a serious issue, usually manifesting as a persistent leak, but is less likely than the other options if it's localized to the left front. This would require professional diagnosis.
* Transmission cooler lines (if applicable): Some vehicles route transmission cooler lines through the radiator. A leak in one of these lines (though usually ATF, not antifreeze) could occur in that area.
It's crucial to get this checked by a mechanic. Driving with a significant antifreeze leak can cause engine overheating, leading to severe and expensive damage. The leak itself needs to be repaired to prevent further fluid loss and potential environmental damage. A proper diagnosis will identify the source and allow for the appropriate repair.
