Oldsmobile 12597151 Oil Pan

Disconnect the cable from the negative battery terminal, ensuring to disable the anti-theft feature on models equipped with such systems before disconnecting the battery. Raise the vehicle and support it securely on jackstands. Drain the engine oil and remove the oil filter. Disconnect the exhaust pipe at the manifold and hangers, tying the system aside. Remove the starter and the bell housing dust cover. Detach the oil pan by removing the bolts, taking care not to pry between the block and pan to avoid damaging the sealing surfaces, which could lead to oil leaks; if the pan is stuck, use a block of wood and a hammer to dislodge it. Use a scraper to remove all traces of sealant from the pan and block, then clean the mating surfaces with lacquer thinner or acetone. Apply a 3/16-inch wide by 118-inch thick bead of RTV sealant to the oil pan flange, making the bead 3/8-inch wide by 3/16-inch thick between the bolt holes at the rear end of the pan, and a 1/8-inch bead of sealant to the block at the rear main bearing cap joints and the timing gear cover joints. Install the oil pan and tighten the mounting bolts to the specified torque, starting at the center of the pan and working out toward the ends in a spiral pattern. Reinstall the bell housing dust cover and the starter, then reconnect the exhaust pipe to the manifold and hanger brackets. Lower the vehicle, install a new filter, and add oil to the engine. Reconnect the negative battery cable, start the engine, and check for leaks.