I had my 54 235 engine completly overhauled by a machine shop. When I first got it home I noticed it had a oil leak, I placed some heavy cardboard under it to soak up the oil. I have now put 269 miles on it and have added 2 1/2 qts. of oil to make it to the full mark. Did they forget the rear main oil seal? I drove it about 40 miles to a car show yesterday, checked the oil, was at the add mark. I noticed when I backed it up to the curb at the show there were oil drips about every foot plus a big spot on the street when we left. I haven't talked to the shop about it yet. Any advice??