GMC Terrain black oil leak with oil smell due to overfilled oil and seal replacement on GMC Terrain

Some GMC Terrain owners report experiencing black oil leaks accompanied by a burning oil smell, which may be caused by factors such as damaged gaskets, worn-out drain plugs, or oil system component failure. These owners often notice dark brown or black spots on the ground where their vehicle has been parked, along with sudden drops in oil levels. The burning oil smell, particularly when the engine is running, can indicate oil leaking onto hot engine parts, potentially entering the cabin through the vents. Additionally, some owners find that overfilling the oil can lead to leaks and other engine issues, emphasizing the importance of maintaining the correct oil level. If the leak is attributed to seal damage, replacing the seals may be necessary, with the extent of repair depending on the severity of the leak. Regular maintenance and prompt attention to these oil leaks are crucial for preventing further engine damage and ensuring optimal vehicle performance.