How to Replace Oil Pan Gasket 04-07 Toyota Highlander L4 2.4L
Difficulty: Intermediate · About 90 min · Toyota Highlander
Reseal the engine oil pan on a 2004–2007 Toyota Highlander 2.4L, removing old RTV carefully and allowing the replacement sealant to cure before starting the engine.
Tools you will need
- Razor Blade / Gasket Scraper
- 14mm Wrench
- Funnel
- 14mm Socket
- Pry Bar
- Jack Stands
- Engine Oil
- Gloves
- Dead Blow Hammer
- Paper Towels
- 10mm Socket
- Drain Pan
- Floor Jack
- Swivel
Parts and supplies
- Oil-pan RTV sealant specified for the engine
- Engine oil and filter
Steps
Raise the vehicle and drain the oil
Support the vehicle securely on stands and place a drain pan below the sump. Remove the drain plug and allow the oil to drain before reinstalling the plug.
Remove the oil pan
Remove the pan bolts and lower the pan carefully. If sealant holds it, tap with a soft mallet and pry only at designated points to avoid damaging the aluminum mating surface.
Clean the pan and engine flange
Scrape off old RTV without gouging either surface. Keep debris out of the sump and wipe both surfaces clean so the new sealant can bond evenly.
Apply RTV and install the pan
Apply the specified sealant in the correct path and set the pan in place. Start all bolts by hand, tighten them in the specified sequence and torque, then wait the required cure time.
Replace the filter and refill oil
Remove the old filter and clean its mounting face. Lubricate the new filter seal with clean oil, install it, then refill the engine with the specified oil grade and amount.
Check the repair for leaks
After the sealant cure period, start the engine briefly and inspect the pan and filter for leaks. Shut it off and recheck the oil level on the dipstick.
Check your vehicle’s repair manual for exact specifications and fit.