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I have a 2005 Subaru Forester 2.5x non-turbo with 92k miles and I believe the separator plate may be leaking. The oil leak is in the middle, towards the rear of the engine, where the engine and trans meet. I also have a head gasket leak, on both banks, and I plan on replacing those as well, but I want to prepare accordingly. Any help is appreciated.

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As far I can tell, there was never a definite switch over from the Phase 1 (plastic) plate to the Phase 2 (Aluminum) plate (you can't get the aluminum one now, but the pressed steel version is just as good). The plastic plates - as you probably know - had a tendency to leak. The aluminum and steel plates don't leak unless they were installed incorrectly (usually as a replacement for a plastic version, and all the sealing gunk hadn't been removed, so the seal wasn't good).

General advice is to factor in a replacement seal if you're going to reseal it (less than $50) - because there's a good chance you'll bend the original seal when getting it off.

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  • Quick comment. I've had really good luck sealing these plates with "The Right Stuff" black. – Mathew A. Oct 31 '16 at 16:11

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