Clean everything that’s wet with oil so you can trace the leak.

If you’re sure it’s engine oil, it’s probably coming from the front crank seal. That oil won’t travel upwards, it’ll stay at the pulley level and make a mess on the oil pan and crossmember. An AC compressor shaft seal failure can sling oil to the area behind the driver side headlight. A power steering pump shaft seal failure can also sling oil but it’s easier to confirm the source because the backside of the pulley will be wet and dirty. A power steering reservoir seal will drip oil on the power steering pump and AC compressor.

Sixto
98 E320s sedan and wagon