Hard to really say what might be leaking without a good physical inspection. First you have to determine what kind of oil is leaking. Then by adding dye into that system (engine oil? Power steering oil? transmission oil?), you can check to see where the leak originates from.
Engine oil can leak from the cylinder heads on this vehicle. It can also leak from the oil pan gasket or engine rear main crankshaft seal. Hard to guess -- a good inspection and diagnosis is in order.
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