How to Change an Oil Pan Gasket Step by Step

Before you start: tools, parts and safety

Look up your engine in a repair manual or the manufacturer's service information first. It will tell you the gasket type, bolt tightening order and torque values. Those numbers vary a lot between engines, so do not guess them.

Safety comes first because you will be working under a raised vehicle with hot, slippery oil. Never rely on a jack alone. Support the car on properly rated jack stands on level ground, chock the wheels that stay on the ground, and let the engine cool until the oil is warm rather than hot. Wear safety glasses, since oil and debris will fall toward your face, and wear nitrile gloves. Disconnect the negative battery cable if you will be working near wiring or the starter.

• New oil pan gasket (or RTV sealant if the manual calls for it) and a new drain plug washer
• Fresh engine oil and a new oil filter
• Socket set, extensions and a torque wrench
• Gasket scraper made of plastic or brass, plus lint-free rags and brake cleaner
• Jack stands and a floor jack, or ramps if the manual allows them
• An oil drain pan with enough room for your engine's full oil volume

Choose the right drain pan

You will drain the whole crankcase on this job, so capacity matters. Find your engine's oil capacity in the owner's manual and pick a pan that holds more than that figure. A fast stream can overshoot a pan that is only just big enough.

Our best oil drain pan comparison lists capacities from 6.5 qt to 30 qt. For example, the Performance Tool W4071 holds 18 qt and has an anti-splash lip and a pour spout. A sealable pan such as the PAK 16 qt, with tethered caps, makes it easier to carry used oil to a recycling center afterward. Pans that stand tall can be hard to fit under a low car, so check height too.

Step-by-step: removing the old pan

Work through these steps in order. Take your time with the bolts, since a stuck pan can bend if you pry on it in one spot.

• Raise the vehicle and support it on jack stands. Remove any splash shield or undertray that covers the pan.
• Place the drain pan under the drain plug, remove the plug and let the oil drain fully. Wipe the plug and set it aside.
• Remove the oil filter if it is in the way, and move aside anything blocking access, such as exhaust parts, a crossmember or a steering link, as your manual directs.
• Loosen the pan bolts a little at a time in a criss-cross pattern, then remove all but two. Keep a loose bolt count and note where different lengths came from.
• Support the pan with one hand, remove the last bolts and lower it. If it is stuck, tap it gently with a rubber mallet or slide a thin plastic scraper between pan and block. Avoid prying with a screwdriver, which can gouge sealing surfaces.
• Look for a pickup tube, baffle or windage tray. Some pans cannot drop until these are loosened, so check before you force anything.

Cleaning and installing the new gasket

Clean surfaces decide whether the new gasket seals. Scrape every trace of the old gasket or sealant from both the engine block and the pan flange. Wipe both with brake cleaner and a lint-free rag until they are dry and free of oil. Check the pan flange for bends around the bolt holes and straighten it gently on a flat surface if needed.

Fit the new gasket as the manufacturer directs. Some are dry-fit, some need small dabs of RTV at corners or joints, and some engines use sealant only. Raise the pan into place, start every bolt by hand, then snug them in a criss-cross pattern from the center outward. Finish with a torque wrench at the specified value. Overtightening can crush the gasket or warp the pan, so do not go past the spec.

If the sealant calls for a curing time before adding oil, follow the product directions.

Refill and check for leaks

Install the drain plug with a new washer, fit a fresh oil filter and refill with the grade and amount listed in your owner's manual. Start the engine, let it idle and check the pan edges and drain plug for drips. Shut it off, wait a few minutes, then recheck the dipstick and top up as needed.

Take a short drive and look under the car again. Pour the used oil into a sealed container and take it to a recycling center. Do not put it in household trash or down a drain.

How long it takes and whether the engine must come out

Time and difficulty depend heavily on the vehicle. The table below gives general ranges based on common layouts, not figures for any specific model.

On most vehicles the engine stays in place. The pan can often be dropped once you move the exhaust, a crossmember or the subframe. The harder cases are some front-wheel-drive and transverse-engine layouts, where the pan is bolted to the transaxle or a subframe blocks access. In those cases you may need to support the engine with a jack or a support bar while you lower the subframe, but you still do not pull the engine out. If your manual lists engine removal as a requirement, that is a good sign to hand the job to a shop.

Frequently asked questions

How much does it cost to change an oil pan gasket?

It varies by vehicle and by whether you do it yourself or pay a shop. Parts are modest, and labor depends on how much has to come apart to reach the pan. Ask a shop for a written estimate for your exact model.

Can I reuse an old oil pan gasket?

It is best not to. A used gasket has compressed and hardened, so it seldom seals as well the second time. Install a new one.

How do I know the pan gasket is leaking?

Look for oil wetness along the seam between the pan and the engine block, often with dirt stuck to it. A drain plug or filter leak can look similar, so clean the area and check where the oil starts.

Should I use sealant on a gasket?

Only if your repair manual says so. Some gaskets are dry-fit, some need dabs of RTV at corners, and some engines use sealant alone.