out of the 4 or so times ive done it, i have tried all possible ways to seal it up to my knowledge. the latest and best appears to be a dry cork gasket with a smear of silicone over the seams of the block to rear main cap and block to front cover. what i do to remove pan is to take both engine mount bolts out and jack the engine up a couple of inches by the balancer, not the oil pan. ive never tried it but i think ive read of people rotating the engine to #1 cyl. tdc or bdc, or something and pullin the pan off. what it does is that it gets the counterweight of the crank out of the way! first time may take u 2 hours my guess. last time i did it, it took about 1 hour! hth!