EDIT: In mild desperation I bought an 8oz bottle of "BlueDevil Stop Oil Leak" this A.M. on my way to work and added it to the oil at mile 120 on this tank. My hope is that somewhere between mile 220 and the end of the tank at maybe mile 600, the oil leak might stop entirely.
Thanks OG & Xist... can any of you say whether you have or would consider using this for a leak like mine?
Amazon.com: Blue Devil Rear Main Sealer (8 oz.): Automotive
Their website says it works by "swelling" the leaking seal, stopping the leak. Even if it were only good for a few thousand miles, I would try it so as to avoid taking my daily driver off the road again right away.