What is cost of repair of rear main oil leak? on 2000 Honda Odyssey

I have a leak from rear main. Is there anything else that can be done to slow it down or correct. If not what does that typically cost?

Asked by for the 2000 Honda Odyssey
Labor guide says its 8.6 hours labor. No real way of slowing down the leak. Ensure the engine breaths properly/good PCV system.