- Heater core: The heater core is a small radiator located behind the dashboard that provides heat for the vehicle's interior. It can develop leaks over time, especially if the vehicle is driven in extreme cold weather. A leak in the heater core can cause antifreeze to leak from the rear of the engine.
- Rear freeze plugs: Freeze plugs are metal plugs that are pressed into the engine block to prevent it from cracking in cold weather. They can develop leaks over time, especially if the vehicle is driven in areas with extreme temperature swings. A leak in a rear freeze plug can cause antifreeze to leak from the rear of the engine.
- Water pump gasket: The water pump is a component that circulates coolant throughout the engine. It is located at the front of the engine, but the gasket that seals it can develop leaks over time. A leak in the water pump gasket can cause antifreeze to leak from the rear of the engine.
- Head gasket: The head gasket is a seal between the cylinder head and the engine block. It can develop leaks over time, especially if the vehicle is overheated or driven hard. A leak in the head gasket can cause antifreeze to leak from the rear of the engine.
- Intake manifold gasket: The intake manifold is a component that supplies air/fuel mixture to the engine. It is located at the front of the engine, but the gasket that seals it can develop leaks over time. A leak in the intake manifold gasket can cause antifreeze to leak from the rear of the engine.
It's important to note that the specific cause of the antifreeze leak may vary depending on the individual vehicle and its condition. If you notice a leak, it's best to have it diagnosed and repaired by a qualified mechanic as soon as possible to prevent further damage to the vehicle.