In my Lumi, the iron 2.5 engine is leaking at rear main seal now, only after 216,000 miles :) anyway, going to replace it soon, havent been into this area on a 2.5 before, and just wondering if anyone knows if the 91 has a round one piece press in seal or the old type 2 piece seal in the bearing cap?

It used a 1-piece rear main seal.

It used a 1-piece rear main seal.

Thanks for the reply, great, i hate 2 piece seals.