Very common leak point for Subaru engines, the head gasket. Especially the older ones. New Subaru engines have been much better with this but I’ve still seen them start leaking. Due to their design, oil sits right on the head gasket and over time eventually develops a leak.

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0:00 Intro
1:05 Intake Manifold Disassembly
2:05 Alternator, Power Steering, Compressor removal
2:40 Intake Manifold Removal
3:14 Turbocharger Removal
4:08 Exhaust Manifold Removal
5:35 Timing Belt Removal
6:20 Camshaft Gear Removal
7:30 Valve Cover Removal
8:29 Camshaft Removal
12:06 Cylinder Head Removal
15:02 Cylinder Head Gasket Replacement
15:37 Head Install
16:55 Camshaft Installation
17:25 Cam Holder Install
18:01 Valve Cover Install
18:20 Final Thoughts