Yes, you could try washing down the engine in the affected area, run the engine for a while, and then check again. You could also use a dye tracer in the oil. You may need to buy the kit because it comes with special glasses and a UV flashlight, and it may be the only way to find the leak. The three areas you should pay attention to are the oil pan gasket, crankshaft seal, and the timing chain cover gasket. Both the timing cover and the oil pan gaskets are a liquid sealer.