Subaru 11109AA151 Pan Assembly Oil

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Disconnect the cable from the negative terminal of the battery. Remove the air filter housing, intake ducts, and the resonator, noting that depending on the vehicle's year and model, the air filter housing may not need to be removed. For turbocharged models, remove the intercooler. Remove the engine support brace and the radiator support brackets. Raise the vehicle and support it securely on jack stands, then remove the front wheels and tires. Remove the engine splash shield, and for non-turbocharged models, remove the exhaust manifold, which is necessary for added clearance when raising the engine for oil pan access. Drain the engine oil and remove the oil filter, then remove the dipstick tube by locating the mounting bolt on the cylinder head, removing the bolt, and sliding the dipstick tube out of the lower housing on the oil pan. Connect an engine hoist to the engine, remove the nuts from the engine mounts at the frame, and raise the engine two inches with the hoist. Remove the bolts securing the oil pan to the engine, tapping on the pan with a soft-faced hammer to break the gasket seal, and lower the oil pan from the engine, using a thin putty knife if necessary to break the seal without damaging the aluminum block. If the oil pump pickup tube interferes with oil pan removal, remove the pickup tube bolts and take both the oil pan and pickup tube out of the vehicle. For installation, scrape out all traces of the old gasket from the engine block and oil pan, being careful not to damage the sealing surfaces. Clean the oil pan with solvent and dry it thoroughly, checking for distortion and straightening any warped areas. Install a new O-ring on the pickup tube and place it in the oil pan, then apply a thin coat of gasket sealant to the new oil pan gasket and position it carefully on the oil pan. Raise the oil pan into position, install the pickup tube without disturbing the gasket, and secure the oil pan to the engine block, tightening the bolts hand-tight and then to the specified torque, avoiding over-tightening to prevent oil leaks. Complete the installation by reversing the removal process, refilling with fresh oil, installing a new filter, starting the engine, and checking for oil leaks.

After removing the air filter housing and support components, raise the vehicle securely on jack stands and remove the front wheels and tires. Eliminate the engine splash shield, and on non-turbocharged models, the exhaust manifold, for added clearance when raising the engine for oil pan bolt access.

Raise the oil pan into position and install the pickup tube. Be careful not to disturb the gasket. Install the oil pan to the engine block and tighten the bolts hand-tight. Working from the center of the pan out to the ends, tighten the bolts to the specified torque. Do not over-tighten the bolts or oil leaks may occur.

For installation, scrape off any old gasket traces, clean the oil pan and gasket surfaces, and place a new O-ring on the pickup tube. Apply a thin coat of gasket sealant to the new oil pan gasket and carefully place it on the oil pan. Raise the oil pan in position, install the pickup tube, and tighten the mounting bolts without disturbing the gasket. Attach the oil pan to the engine block, tightening the bolts gradually from the center to the ends, avoiding overtightening to prevent oil leaks.