How to Replace Lower Engine Oil Pan 02-06 Nissan Altima
Difficulty: Intermediate · About 90 min · Nissan Altima
Replace the lower engine oil pan on a 2002–2006 Nissan Altima, clean the sealing surfaces carefully, and allow the sealant to cure as specified before running the engine.
Tools you will need
- Razor Blade / Gasket Scraper
- Socket Extensions
- 14mm Socket
- Pry Bar
- Jack Stands
- Brake Parts Cleaner
- Side Cutters
- Rubber Mallet
- Flat Blade Screwdriver
- Paper Towels
- RTV
- 10mm Socket
- Drain Pan
- Ratchet
- Floor Jack
Parts and supplies
- Lower engine oil pan
- RTV sealant specified for the engine
- Engine oil and filter
Steps
Raise the vehicle and drain the oil
Raise and support the vehicle securely, then place a drain pan beneath the oil pan. Remove the drain plug and allow the oil to empty before reinstalling the plug.
Remove the old oil pan
Remove the pan fasteners and tap the pan with a soft mallet if the seal is stuck. Use a pry tool only at designated points so the engine mating surface is not gouged.
Clean the sealing surfaces
Scrape away old sealant without scratching the block or pan flange. Clean both surfaces with an appropriate residue-free cleaner and ensure no debris enters the open engine.
Seal and install the replacement pan
Apply a continuous bead of the specified RTV in the required path and place the pan promptly. Start the bolts by hand, tighten them in the specified sequence and torque, then observe the sealant cure time.
Replace the oil filter and refill
Remove the old filter, lubricate the new filter gasket with clean oil, and install it according to its instructions. Refill with the specified oil quantity and grade.
Check for leaks and oil level
Start the engine only after the sealant's required cure period. Shut it down after a brief run, inspect around the pan and filter for leaks, and recheck the dipstick level.
Check your vehicle’s repair manual for exact specifications and fit.