1. Oil Filter: The oil filter is located on the left side of the engine and can develop a leak if it is loose, damaged, or the gasket fails. Check the oil filter for any signs of damage or leaks, and tighten it securely if necessary.
2. Valve Cover Gasket: The valve cover gasket is located on the top of the engine and can leak oil if it is damaged or worn out. Look for any signs of oil seeping from the valve cover area and replace the gasket if needed.
3. Oil Pan Gasket: The oil pan gasket is located at the bottom of the engine and can leak oil if it is damaged or worn out. Inspect the oil pan area for any signs of oil leaks and replace the gasket if necessary.
4. Oil Cooler Lines: If your vehicle is equipped with an oil cooler, the oil cooler lines can develop leaks over time. Check the oil cooler lines for any signs of damage or leaks and replace them if necessary.
5. Oil Pressure Switch: The oil pressure switch is located on the left side of the engine and can develop a leak if it is loose or damaged. Check the oil pressure switch for any signs of damage or leaks and tighten it securely or replace it if necessary.
6. Timing Chain Cover Seal: The timing chain cover seal is located on the front of the engine and can leak oil if it is damaged or worn out. Look for any signs of oil leaking from the timing chain cover area and replace the seal if necessary.
7. Head Gasket: A leak from the head gasket, which seals the cylinder head to the engine block, can also cause oil to leak on the left side of the engine. However, this is a more severe issue and would likely be accompanied by other symptoms such as coolant leaks, overheating, or engine misfires.
