Any type of sealant can be considered an adhesive as long as the sealant dries and adheres to both surfaces. Remember theirs more than 1 way to always complete a job. In all fairness, how often are you planning on removing the oil pan, you have to drop the cradle so I'm sure it's not that often. Whatever sealant you choose, make sure you get the corners of the oil pan as well as the crank end and flex plate end of the pan. These areas are especially prone to leaks and you'll see why when you pull the pan down.
