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chances are it is NOT the rear main seal that is leaking in this location. It is far more likely that it is the separator plate that is the source of the leak. in fact, it is highly recommended here to NOT touch the rear main seal on these engines by those that have far more experience than i, and I have had my share. I had one leaking so badly it was losing a quart of oil every few days. resealed the separator plate and problem solved.

How do you make something yours when you’ve already had it? And how do you blow it up in two weeks, intentional? Looking forward to seeing where you go with this build. Cheers Bennie

Keep up the good effort mate. I love that colour in the wagons! Cheers Bennie

the separator should be metal on those early years if it's stock. that doesn't mean it still can't leak from the sealant between the plate and block, but it at least won't crack like the goofy plastic ones. PCV valve and identifying and repairing known leaks is always the first step to oil leaks/loss. Sounds like you already have the idea that the valve cover gaskets are bad - those things leak all the time, by far the most common leak point of an older Subaru. That's probably your issue if you already suspected it and are loosing a lot of oil.

Thanks. EA81 - probably should have mentioned.

i put a toyota sc12 or 14 (previa super charger )on an ea82 back in that day. over 15 years ago. it definitely made more power, wasnt super difficult to do, and dirt cheap. i messed around with it for a few months and sold the car, so no idea how reliable it ended up being. peak boost was 5psi. total cost was maybe 250. i see that as a win