Some Cadillac XTS owners report experiencing antifreeze leaks, particularly from hose connections to the engine or radiator, which is common in the 2013 model with a 3.6-liter engine. These leaks are often found towards the front of the vehicle, above where A/C condensation typically collects. A faulty radiator may cause antifreeze to pool on the garage floor or driveway, and symptoms of a coolant leak include coolant pooling beneath the car, indicating potential issues with the radiator or its hoses. Owners are advised to closely monitor the temperature gauge and coolant level, as significant coolant loss can lead to the XTS running hot or overheating. To address suspected leaks, it is recommended to inspect the radiator and hoses for visible signs of damage and to check the coolant container, topping it up with the correct type of coolant if levels are low, to prevent overheating.

Some Buick Encore owners report experiencing antifreeze leaks that can lead to overheating and potential engine damage if not addressed promptly. Common causes of these leaks include failures in plastic components such as the reservoir, radiator, or hoses, which are particularly vulnerable in Buick Encore models. Symptoms of an antifreeze leak may manifest as a coolant smell, visible puddles under the vehicle, or a decreasing coolant reservoir level despite no apparent leaks. To accurately diagnose the issue, some owners find it essential to have the cooling system pressure tested and seek assistance from a qualified mechanic or dealership for effective repairs. Additionally, selecting the correct coolant and regularly inspecting the cooling system can help prevent future leaks and ensure the proper functioning of the vehicle.