This procedure covers the complete removal and replacement of the oil pan on a 2014-2019 Toyota Corolla with the 1.8L I4 engine, including draining oil, removing necessary components for access, and reinstalling with proper torque specifications.

Warnings

Tools required

Parts

• Oil pan × 1 — Use OEM specification
• Oil pan gasket × 1 — Use OEM specification
• Oil drain plug crush washer × 1 — Toyota 90430-12031 or equivalent
• RTV silicone sealant × 1 — Toyota Genuine FIPG or equivalent

Fluids

• Toyota Genuine 0W-20 — 4.5 qt

Preparation

1. Park vehicle on level surface and allow engine to cool completely
2. Disconnect negative battery terminal
3. Raise vehicle and support securely on jack stands at all four corners
4. Remove engine splash shield and lower covers using 10mm socket
5. Place oil drain pan beneath engine
6. Install engine support fixture across engine bay to support engine weight

Procedure

1. 1

   Drain engine oil
   Remove the oil drain plug using a 17mm socket and allow all engine oil to drain completely into the drain pan. This may take 10-15 minutes for complete drainage. Inspect the drain plug threads for damage.
2. 2

   Remove oil filter
   Using an oil filter wrench, remove the oil filter to allow additional oil to drain from the engine. Be prepared for residual oil spillage. Dispose of the old filter properly.
3. 3

   Remove front exhaust pipe
   Disconnect the front exhaust pipe from the exhaust manifold and remove the exhaust pipe hangers. Lower the front section of the exhaust to provide clearance for oil pan removal. Support the exhaust pipe with wire or a stand to prevent damage to oxygen sensors.
4. 4

   Support engine and remove right-side engine mount
   Using the engine support fixture, take up the weight of the engine. Remove the right-side engine mount bolts and the engine mount bracket. This will allow the engine to be lifted slightly for oil pan clearance. Raise the engine approximately 1-2 inches using the support fixture.
   ⚠Ensure engine support is secure before removing mount bolts. Monitor all hoses and wiring to prevent over-extension when raising engine.
   Torque spec

   Mounting Bolts26 Nm (19 lb-ft)
5. 5

   Remove oil pan bolts
   Remove all oil pan bolts in a crisscross pattern starting from the outside and working inward. There are approximately 16-18 bolts around the perimeter. Keep bolts organized as some may be different lengths. Note the location of any brackets or sensors attached to the oil pan.
6. 6

   Separate and remove oil pan
   Carefully insert a plastic scraper or thin pry bar between the oil pan and engine block to break the gasket seal. Work around the perimeter gently to avoid damaging the sealing surfaces. Once separated, lower the oil pan carefully, watching for any remaining oil. Remove the oil pickup tube from inside the oil pan if necessary.
   ⚠Do not use excessive force or metal tools that could gouge the aluminum sealing surfaces on the engine block or oil pan.
7. 7

   Clean sealing surfaces
   Thoroughly clean all gasket material and old RTV sealant from both the oil pan and engine block mating surfaces using a plastic scraper. Use brake cleaner and shop towels to remove all oil residue. Inspect both surfaces for damage, warping, or cracks. The surfaces must be completely clean and dry for proper gasket sealing.
8. 8

   Install oil pickup tube
   If removed, install the oil pickup tube into the new or cleaned oil pan with a new O-ring. Ensure the pickup tube is fully seated and secure it to the specified torque.
   Torque spec

   Oil Pump Pickup Tube12 Nm (9 lb-ft)
9. 9

   Install new gasket and prepare oil pan
   Install the new oil pan gasket onto the oil pan or engine block according to manufacturer instructions. Apply a thin bead of RTV silicone sealant to the corners where the timing cover meets the engine block and at the rear main seal area. Follow the RTV manufacturer's assembly time window specifications.
   ℹ️Most RTV sealants require assembly within 10-15 minutes of application. Work efficiently once sealant is applied.
10. 10

    Install oil pan
    Carefully position the oil pan onto the engine block, ensuring the gasket remains properly aligned. Thread all oil pan bolts by hand first to ensure proper alignment. Tighten the bolts in a crisscross sequence starting from the center and working outward to the specified torque. Make at least two passes, first to 6 Nm then to final torque.
    Torque spec

    Oil Pan Bolts12 Nm (9 lb-ft)
11. 11

    Reinstall engine mount
    Lower the engine back to its normal position using the engine support fixture. Reinstall the right-side engine mount bracket and mount bolts. Tighten the mount bolts to the appropriate specification based on bolt size.
    Torque spec

    Mounting Bolts26 Nm (19 lb-ft)
12. 12

    Reinstall exhaust components
    Reconnect the front exhaust pipe to the exhaust manifold using new gaskets. Install all exhaust hangers and support brackets. Tighten exhaust flange bolts evenly to prevent leaks.
13. 13

    Install drain plug and oil filter
    Install a new crush washer on the oil drain plug and thread it into the oil pan by hand. Tighten the drain plug to the specified torque. Install a new oil filter, lubricating the O-ring with clean engine oil first. Tighten the oil filter hand-tight plus 3/4 turn.
    Torque spec

    Oil Drain Plug35 Nm (26 lb-ft)
14. 14

    Refill engine oil and check for leaks
    Lower the vehicle and fill the engine with 4.5 quarts of Toyota Genuine 0W-20 engine oil. Start the engine and allow it to run for 2-3 minutes while monitoring the oil pressure light. Shut off the engine and wait 5 minutes, then check the oil level and add if necessary. Inspect the oil pan, drain plug, and filter area for any signs of leaks.

Reassembly

1. Reinstall all under-engine covers and splash shields
2. Remove engine support fixture
3. Reconnect negative battery terminal
4. Allow RTV sealant to cure for at least 1 hour before starting engine if recommended by sealant manufacturer
5. Torque all fasteners to specification in proper sequence

Verification

• Start engine and verify oil pressure light extinguishes within 3-5 seconds
• Allow engine to reach operating temperature and inspect for oil leaks around oil pan perimeter, drain plug, and oil filter
• Shut off engine, wait 10 minutes, and recheck oil level on dipstick - adjust to full mark if needed
• After first drive cycle, re-inspect oil pan and all connections for any signs of seepage
• Check for proper engine mounting - no excessive vibration or movement

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