Outback Oil Drain Plug Washer & Torque

The rounded side, as the pan countour is also rounded. The flat side mates to the bolt's flatness.

Dunno the spec, but until someone answers, here's what I do: tighten till I feel the washer crush a bit. I've neither had leaks or difficulty removing it in future changes, so I guess that's okay. Someone with a service manual will surely pop in to give us the word, though I hope.

-- Todd H.

I made mine halfway between "snug" and "supertight".