1. Check the oil filter: Ensure the oil filter is properly tightened and free from damage or cracks. If the oil filter is loose, tighten it and see if the leak stops.
2. Inspect the oil drain plug: Locate the oil drain plug on the bottom of the oil pan. Ensure it is properly tightened and free from any damage. If it is loose, tighten it and see if the leak stops.
3. Examine the valve cover gasket: The valve cover gasket is located on top of the engine, and it prevents oil from leaking out from around the valve covers. Inspect the gasket for any signs of damage or cracks, and replace it if necessary.
4. Check the oil pan gasket: The oil pan gasket is located between the oil pan and the engine block, and it prevents oil from leaking out from the bottom of the engine. Inspect the gasket for any signs of damage or cracks, and replace it if necessary.
5. Check the oil pressure sending unit: The oil pressure sending unit is a small device located on the side of the engine, and it sends information about the engine oil pressure to the vehicle's instrument cluster. Ensure it is properly tightened and free from any damage, as it can be a potential source of oil leaks.
6. Look at the oil cooler lines: The oil cooler lines are responsible for carrying oil between the engine and the oil cooler, located behind the radiator. If these lines are damaged or leaking, they can drip oil onto the transmission. Check the lines for any signs of damage or leaks.
Once you have gone through these checks and ensured everything is tight, dry and in good condition, try running the engine and see if the oil leak persists. If you are still unable to locate the source of the oil leak, it is recommended that you take the vehicle to a qualified mechanic for further assistance.
