I just sold my 91 vert to a friend/acquantance. We came to an agreement of 7K, the car was cosmetically very nice, the engine/tranny was OK w/ 82,000 miles on it. He was aware the clutch/tranny would need an overhaul in the next year or two. So on his ride home, he gets oil spewing out the underside, to the effect of loosing a quart on his hour long ride home. He looked at it and thinks his rear main seal is shot. Question is, what do I do. I know I sold it as is, but I look like a jackass if he can't even get it home without breaking. Do I offer him $, and how much? Any advice out there. I plan on driving over and verifying what he is saying is true. My thoughts are I offer him $400 for a new clutch and seals, leave the labor up to him since he hangs with capable mechanics. Give me your thoughts please!!