csx4910,
Did you buy your motor directly through Roush or did you buy it through a dealer? If you bought it through a dealer or installer, give them the full court press to do your bidding to correct the situation with Roush. I thought I had a rear-seal leak, but it ended up being some galley plugs on the back of the engine that leaked
oil on the clutch (which needed to be replaced) and drip below the bell housing (looked like a rear seal leak).
What is the extent of your
oil leak? You might want to invest in an inexpensive UV light and do a little investigating to see if you can isolate the issue.
Roush will stand by their product, but you've got to have a lot of patience.