Q: Car overheating and leaking coolant

Cooling system leaks will lead to a loss of coolant, and possibly coolant circulation problems. The cooling system should never be serviced when the engine is hot, or if the system is pressurized, or serious injury can occur. The cooling system should be pressure tested to locate the leak. Once the leak is repaired, the system will need to be pressure tested again to ensure that the leak has been repaired, and no other leaks are present. You may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the equipment and training to locate the source of the leak and the ability to fill, and bleed the cooling system.