Autopapyrus · Mitsubishi Outlander 2.4 (4B12) (2016)
https://autopapyrus.com/guides/mitsubishi/outlander/oil-pan-removal-and-installation/

Compiled automatically from service literature and owner experience. Specs are for the typical configuration — check them against your exact car before you start.

Mitsubishi Outlander 2.4 (4B12) (2016): Oil Pan Removal and Installation

On the 4B12, the oil pan is bolted to the cylinder block and to the transmission housing, and it seats on liquid sealant rather than a preformed gasket. The key points of the job are fully degreasing the mating surfaces and allowing the sealant to cure for the proper time. The exact set of components to be removed, the tightening sequence and the torque specs are not documented in open service materials for this model, so what follows is the general procedure with approximate ranges.

Difficulty: Medium Time: 3-5 hours Steps: 15 Tools: vehicle lift or inspection pit, socket set and ratchet, torque wrench, oil filter wrench, plastic scraper, surface cleaner and degreaser, oil drain pan of 6 L (6.3 qt) or larger, jack or engine support (in case the subframe has to be lowered)

Part

🔩 The oil pan is usually reused if it has no dents, cracks or thread damage. You will need: engine oil to the manufacturer's specification (approximately 4 L (4.2 qt) with a filter change), an oil filter, a new drain plug washer, and oil pan sealant (oil-resistant anaerobic or silicone, preferably genuine Mitsubishi). If the pan is punctured, buy a complete 4B12 engine oil pan assembly

There's a full repair manual for this car Every system, wiring diagrams and torque specs — not just this job. Haynes AutoFix (online) and 2 more. See manuals →

Step by step

15 steps

Warm up the engine for 2-3 minutes, shut it off and put the vehicle on a lift on level ground. Disconnect the negative battery terminal.
Remove the engine undercover and drain the oil by unscrewing the drain plug. Let the oil drain completely.
Remove the oil filter and take it, along with the used oil, to a recycling facility. It is best to replace the filter at the same time.
If exhaust system components, braces, brackets, A/C lines or other accessories near the pan are in the way, remove them. On front-wheel-drive versions, check whether the steering rack and the subframe crossmember interfere. If they do, support the engine and lower the subframe to the required height without straining the hoses and linkages.
Remove the bolts securing the oil pan to the cylinder block in a spiral pattern from the edges toward the center, in several passes. Note the length and location of the bolts, as they vary.
Remove the bolts connecting the oil pan to the transmission housing, if present.
Separate the oil pan. If it is stuck on the sealant, carefully run a plastic or thin flat scraper along the joint. Do not strike the aluminum pan with a hammer or pry it with sharp screwdrivers, to avoid damaging the mating surface.
Inspect the oil pickup tube and screen: clean them if necessary and make sure the pickup seal or O-ring is intact. Inspect the pan for cracks and dents, and the drain hole for thread wear.
Thoroughly clean the mating surfaces on the block and the pan of old sealant and oil, then degrease them. Residual oil and sealant cause leaks.
Apply new sealant in an even bead around the pan, making sure to circle all the bolt holes on the inside. Take the bead width and the assembly time (the pan usually must be installed within a few minutes) from the sealant instructions. Do not apply too much sealant, since excess gets squeezed into the oil passage during assembly.
Place the pan in position and thread in all the bolts by hand until they make contact. Tighten from the center toward the edges in two or three passes. The torque for oil pan bolts of this type is usually low, about 8-12 N·m (6-9 lb-ft) (for exact values, see the manufacturer's service manual). Do not overtighten, as the aluminum threads in the block strip easily.
Reinstall all removed parts, the engine undercover and the lowered subframe. Install the drain plug with a new washer, torqued to the manufacturer's specification, approximately 35-45 N·m (26-33 lb-ft).
Let the sealant cure before adding oil. Usually 30-60 minutes is enough, but it is better to follow the time stated on the package. Lubricate the new filter's gasket with oil and tighten the filter by hand.
Fill with oil of the correct viscosity and specification, and check the level on the dipstick. Reconnect the battery, crank the engine with the starter for a few seconds without starting it to build oil pressure, then start the engine and make sure the oil pressure light goes out.
Let the engine run for a few minutes and check the pan joint and the filter for leaks. After a day, recheck the oil level and make sure the joint is dry.

Common mistakes and warnings

Do not start the engine until the sealant has set and the oil has been filled to the correct level. Be careful with hot oil and the exhaust system. Do not work under the vehicle without secure supports. If the job requires lowering the subframe and you lack experience, it is better to take it to a repair shop.