Leaking antifreeze n don't know what could b the problem
The cooling system that is leaking and over 13 years old could be most any component in the system. The cooling system will need to be pressure tested to locate the leaks in the system. The radiators and expansion tanks are known to get heat stress cracks over time. This is why the system will need to be tested by a mechanic like one from YourMechanic that can come to you and using a pressure tested find the cooling system leak and then a quote for the needed repairs that will be needed to fix the cooling system.
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