Q: How to remove and install Oil Pan in V6 engine on 2012 Ford Fusion?
A: To remove the oil pan, first disconnect the cable from the negative battery terminal and raise the vehicle securely on jackstands. Drain the engine oil, reinstall the oil drain plug with a new sealing washer, and remove the oil filter. For the 2.7L engine, take off the radiator support panel by removing the plastic push-pin fasteners, then detach the radiator guide pins and support the cooling module with plastic cable ties. Remove the underbody splash shield fasteners and both splash shields, along with the right-side inner fender splash shield. Disconnect the stabilizer bar links from the struts, then remove the rear crossmember mounting nuts and the rear crossmember itself. Mark the locations where the subframe meets the body at four points, then place a floor jack and two jackstands under the subframe. Ensure the cooling module is securely held above, then remove the radiator lower support bolts and support from under the radiator. Remove the subframe rear bolts and rear bracket bolts, followed by the front subframe bolts, ensuring the subframe is securely on the jackstands. Use a floor jack to lower the left side of the subframe approximately 3 inches and place jackstands back under it, then do the same for the right side, lowering it about 1 inch. Remove the oil pan mounting bolts, break the sealant with a screwdriver or small prybar, and lower the oil pan by rotating the front slightly to the left and clearing the exhaust. Replace the oil pump-to-oil pan seal, noting that the oil pan is not reusable on 2.7L engines. For 3.0L and 3.5L engines, disconnect the oxygen sensor connectors, remove the crossover and flexible exhaust pipe, and driveplate access cover. For the 3.5L engine, support the engine from above and slightly move the transaxle back, ensuring not to exceed 0.19 inches. Remove the bolts securing the oil pan to the transaxle, then remove the oil pan and discard the gasket. Clean the mating surfaces thoroughly. For installation, on 2.7L engines, install a new pan-to-oil pump seal and a new O-ring seal on the oil pick-up tube if removed. Install the tube and screen assembly, tightening the retaining fasteners. For 3.0L engines, install a new gasket on the oil pan and apply RTV sealant. Install the pan bolts and tighten them gradually and evenly, ensuring proper alignment. For 2.7L and 3.5L engines, apply RTV to the oil pan flange, install the pan with the corner bolts hand-tight, and tighten the rest in a criss-cross pattern. Finally, tighten all fasteners, replace any disturbed self-locking nuts, fill the engine with fresh oil, install a new oil filter, start the engine, and check for leaks.