How to Change the Oil on Jeep Cars

by Contributing Writer; Updated June 12, 2017

The company also advises replacing the oil filter then, too. You can have the dealership do this, or can you do it yourself and save the labor cost. The only additional expense is the one-time purchase of a specialized oil filter wrench.

Under The Hood:

 How to Change the Oil on a 95 Jeep Grand Cherokee

Open the Grand Cherokee's hood and remove the oil filler cap -- this provides ventilation to the crankcase during draining.

Lift the Grand Cherokee's front end, using a floor jack, and slide jack stands under the SUV's frame rails. Lower the vehicle until only the jack stands support its weight.

Crawl beneath the Grand Cherokee and locate the oil pan -- the large metal pan on the bottom of the engine. Position a drain pan under the drain plug in the oil pan. Loosen the drain plug, using the closed end of a 16 mm combination wrench. Remove the drain plug by hand.

Pull the gasket from the drain plug. Clean the drain plug, using a clean, lint-free cloth, and install a new gasket. Once the oil draining from the oil pan slows to only a few drips, hand-tighten the drain plug into the oil pan. Tighten the drain plug to 25 foot-pounds, using a torque wrench and socket.

Locate the oil filter, the roughly 4-inch long cylinder to the side of the oil pan. Position the drain pan under the oil filter and loosen the filter with an oil filter wrench to drain the oil.

Remove the oil filter by hand once all of the oil drains from the filter. Set the filter in the drain pan.

Clean the oil filter mating surface on the engine, using a clean, lint-free cloth. Check that the O-ring from the old filter did not stick to the mating surface. If it did, pull it off with your hands.

Place a small amount of new engine oil on your fingers and coat the O-ring on the base of the new oil filter with new oil. This allows you to tighten the oil filter without the O-ring binding.

Tighten the oil filter onto the engine until it makes contact with the mating surface on the engine. Tighten the oil filter one additional turn to seal it.

Raise the Grand Cherokee off the jack stands, using the floor jack, and remove the jack stands from under the vehicle. Lower the SUV to the ground.

Insert a funnel into the oil filler hole and pour in 5 qts. of 5W-30 engine oil in a 5.2-liter engine, and 6 qts. of 5W-30 oil in a 4.0-liter engine.

Remove the engine oil dipstick and wipe off the oil, using a clean, lint-free cloth. Reinsert the oil dipstick and remove it again. Check that the oil level within the "Safe" zone on the end of the dipstick. Add additional oil as needed.

Remove the funnel and close the oil filler cap. Start the Grand Cherokee's engine and allow it to run for about two minutes. Shut the engine down. Check and adjust the oil level following Step 12.

Close the Cherokee's hood.

Insert a funnel into an empty oil bottle and pour old oil from the drain pan into the bottle until it's full. Close the bottle. Repeat this process until all of the old oil is in bottles. Take the bottles of old oil and the old filter to a local oil-recycling facility. Many auto parts stores take used oil free of charge.

Items you will need

  • Floor jack

  • Jack stands

  • Drain pan

  • 16 mm combination wrench

  • Clean, lint-free cloths

  • New oil drain plug gasket

  • Torque wrench

  • Socket set

  • Oil filter wrench

  • Up to 6 qts. 5W-30 engine oil

  • Oil filter

  • Funnel

 How to Change the Oil in a 1999 Jeep Grand Cherokee

Warm the engine up for 10 to 15 minutes to expand and thin the engine oil.

Drive the Grand Cherokee up onto car ramps carefully. Apply the parking brake and release the hood latch.

Open the hood. Remove the oil fill cap located on the valve cover.

Put on your safety glasses and latex gloves. Crawl under the Cherokee with everything except the replacement engine oil.

Place the oil drain pan beneath the oil plug on the oil pan.

Use a wrench to remove the oil drain plug from the oil pan in a counterclockwise direction (16 mm for 4.0-liter and 13 mm for 4.7-liter).

Allow the oil to drain for 30 minutes or until it stops trickling and becomes a random drip.

Replace the oil drain plug tightly with the appropriate wrench.

Relocate the oil drain pan. Remove the oil filter using an oil filter wrench. The filter is located on the passenger side of the engine block.

Allow the oil to drain from the filter and the oil filter housing. Use a shop rag to wipe off any spillage on the pan and the filter area.

Lubricate the oil filter gasket of the replacement filter with spent oil. Hand tighten the filter onto the threads of the oil filter flange. Do not tighten the filter with a wrench and be sure the gasket from the old filter did not remain behind on the flange.

Crawl out from under the Cherokee and place a funnel into the oil fill hole.

Add 6 quarts of appropriate engine oil depending on the engine. Start the engine for at least 30 seconds.

Back the Cherokee off the car ramps so the vehicle is level. Check the oil level on the dipstick (located on the passenger side of the engine block) to ensure the oil level is in the safe zone indicated by the marks on the end of the dipstick.

Items you will need

  • 2 car ramps

  • Safety glasses

  • Latex gloves

  • Oil drain pan

  • Metric wrench set

  • Shop rags

  • Oil filter wrench (large or adjustable)

  • Replacement oil filter

  • Funnel

  • 6 quarts of 10W30 engine oil (4.0-liter or 4.7-liter HO)

  • 6 quarts of 5W30 engine oil (4.7-Liter)

 How to Change the Oil in a 2006 Jeep Commander

Initial Purchases

Use API-certified SAE 5W-30 motor oil if the engine is 3.7 or 4.7 liters. Use SAE 5W-20 for a 5.7L engine.

Use a Mopar oil filter from your local Jeep dealership. The part number is 05281090.

Buy an oil filter wrench that fits the Mopar oil filter (part number 05281090).

Changing the Oil

Run the engine in neutral for five minutes. This warms up the oil so it empties from the tank faster. Even then, the oil will take more than 15 minutes to empty.

Turn off the engine for a few minutes to avoid burning yourself on hot oil splashes.

Elevate the car on a car lift or blocks. A less desirable option is to use a car jack. The car can roll off a jack when you’re under it, so don’t attempt this without sufficient precautions. Stabilize the car by placing heavy bags (salt or fertilizer, for instance) under each side of one of the rear tires. Slide something, such as blocks or a jack stand, under the car next to the jack, then move the jack to raise the other side.

Unscrew the engine oil cap. It will be located on top of the engine block and will say “engine oil” on it. Opening it allows air in to replace oil pouring out the bottom.

Position a drain pan under car, under the drain bolt. It should be on the bottom of the side of the oil tank.

Unscrew the drain bolt counterclockwise, using a crescent wrench. Don't lose the washer.

Let it drain for 20 minutes.

Find the oil filter on the underside of the engine. You’ll recognize it as a cylinder about as wide as it is tall.

Cover the end of the oil filter with the oil filter wrench. Loosen it counterclockwise with a crescent wrench. (The oil filter wrench isn’t a wrench in the usual sense, and needs a conventional wrench to work it.) Screw off the filter by hand.

Take out the gasket (the rubber O-ring) that fits between the filter and engine. Wipe the filter mounting surface clean, including any gasket residue.

Coat the new gasket with engine oil, position it on the filter mounting surface and screw the oil filter on by hand. Tighten it until you feel resistance. Then, use the oil filter wrench and tighten it another two-thirds of a turn. Over-tightening can cause an oil leak.

Screw the drain bolt back in. If you’re using a torque wrench, tightening to 22 to 29 foot-pounds should suffice. Don’t overtighten it.

Pour the oil into the top of the engine, where you removed the oil cap. Use a funnel. Read the dipstick to make sure you don’t overfill, which can reduce mileage and even hurt the engine.

Run the engine in neutral for five minutes. Check the oil filter and drain bolt to make sure there’s no leaking.

Take the car of its supports.

Use soap and water to wash your skin clean of any used oil.

Drop off the used oil at a recycling center or a gas station. Don’t pour it down the drain, where its toxicity can affect groundwater and the environment.

Put the used oil filter and the upside-down empty oil cans in the drain pan for the next oil change. By then, they’ll be drained and can be thrown out in the regular garbage.

Items you will need

  • Mopar oil filter, part number 05281090

  • Car jack, car lift or car blocks

  • Four quarts of oil

  • Oil filter wrench

  • Funnel

  • Drain pan

 How to Change the Oil in a Jeep Liberty 3.7L

Open the Liberty's hood and twist the oil filler cap counterclockwise to loosen it. Remove the cap from the top of the engine.

Raise the front of the Liberty off the ground, using a floor jack, and slide jack stands under the SUV's subframe. Lower the vehicle onto the jack stands.

Crawl beneath the vehicle and find the oil drain plug on the oil pan -- the large metal pan on the bottom of the engine. Position a drain pan under the drain plug and loosen the plug, using a combination wrench. Remove the drain plug by hand. Allow the oil to drain from the oil pan until only slow drips come from the pan.

Wipe the drain plug's threads off with a clean, lint-free cloth and hand-tighten the plug into the oil pan. Tighten the drain plug, using a combination wrench. Be careful not to over-tighten the drain plug, as it can strip the threads in the oil pan, resulting in major repairs.

Slide toward the front of the engine and locate the oil filter -- the roughly 4-inch-long metal cylinder -- on the driver's side front of the engine. Position the drain pan beneath the oil filter and loosen the filter with an oil filter wrench. Allow the oil to drain from the filter until it stops flowing. Remove the filter by hand once the oil stops flowing. Set the old filter in the drain pan.

Wipe the oil filter mounting stud -- on the engine -- and mounting base off with a clean, lint-free cloth. This removes any debris, helping to assure a good seal.

Place a small amount of new engine oil on your finger and coat the rubber O-ring on the bottom of the filter with this new oil. Hand-tighten the filter onto the oil filter stud until the O-ring contacts the oil filter-mounting base. Tighten the oil filter an additional three-quarters of a turn to seat the filter.

Raise the Liberty off the jack stands, using a floor jack, and remove the jack stands. Lower the vehicle to the ground.

Insert a funnel into the oil filler hole and pour 5 qts. of new API-certified 5W-20 engine oil through the funnel. Allow the oil to settle for approximately 2 minutes. Pull the engine oil dipstick from the dipstick tube and wipe the oil off it, using a clean, lint-free cloth. Reinsert the oil dipstick and remove it again. Verify that the oil level is within, or slightly above, the "Safe" range on the dipstick. Ad more oil as needed. Tighten the oil filler cap back onto the top of the engine.

Start the Liberty's engine and allow it to run for about 2 minutes -- check for oil leaks as it runs. Shut the engine down and allow the oil to settle for a minute or two.

Remove the oil dipstick, wipe it off with a clean, lint-free cloth and reinsert it into the engine. Remove the dipstick again and verify that the oil level on the dipstick is within the "Safe" range. Remove the oil filler cap, and add more oil, using a funnel, if needed. Tighten the oil filler cap onto the engine, if needed.

Insert a funnel into one of the empty oil bottles and fill the bottle with old oil from the drain pan. Once full, remove the funnel and tighten the cap onto the oil bottle. Repeat this step with each empty bottle until all of the old oil is inside the oil bottles.

Take the bottles of old oil and filter to a used automotive oil-recycling center for disposal. Many auto parts stores take old oil free of charge.

Items you will need

  • Floor jack

  • Jack stands

  • Drain pan

  • Combination wrench

  • Clean, lint-free cloths

  • Oil filter wrench

  • 5 qts. 5W-20 engine oil

  • Funnel