I just put a 2.5 petrol motor in to my SII and have a nice little puddle (4" circle) under the truck when I shut it off. It is not coming out of the threaded hole at the bottom of the bell housing but from the sides and bottom seam at the oil pan. When assembling the motor I noticed there was no gasket or sealant between the engine and the bellhousing. Should there have been? Neither the Green Bible nor Haynes manual specify. Any wisdom would be appreciated.