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Jeep Wrangler Engine Oil Change Guide
How to change the motor oil & replace the oil filter in a 2007 to 2011 Jeep Wrangler with the 3.8L EGH V6 engine.

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Wrangler 3.8L EGH V6
Oil Filler Cap SAE 5W-20
Unscrew Oil Filler Cap
This automotive "how-to" guide was specifically written to assist owners of the 4th generation 2007, 2008, 2009, 2010, 2011 and 2012 "JK" Jeep Wrangler in changing the motor oil and replacing the oil filter in the 3.8 liter EGH V6 engine.

Owners of other Chrysler or Volkswagen vehicles equipped with the 3.8L EGH V6 such as the New Yorker, Imperial, Voyager minivan, Town & Country, Pacifica, and the VW Routan SUV may also find these DIY instructions to be helpful.

The items needed to complete this oil change include a 13mm socket with ratcheting wrench, a used oil catch container, a new oil filter, an automotive funnel, and 6 quarts (5.7L) of new SAE 5W-20 motor oil.

Some compatible aftermarket oil filters include the following with their part numbers: Purolator PL10241, Mobil 1 M1-102, Fram PH3614, Bosch D3330, K&N HP-1002, ACDelco PF53, Driveworks DW-241, Wix 51348 and Motorcraft FL793.

Oil Filter Above Oil Pan
Oil Pan & Drain Bolt
Remove Oil Drain Bolt
The first step is to warm up the engine for a few minutes to help suspend any contaminants and allow the old oil to flow out more quickly when the drain bolt is removed.

Then shut off the engine, engage the parking brake and chock the front wheels to prevent the vehicle from moving.

Open the hood of the vehicle and remove the "Engine Oil" filler cap by twisting it off counter clockwise.

Removing the oil filler cap will prevent a vacuum from forming when the drain bolt is removed and allow the old oil to drain quickly.

Slide under the front passenger side of the vehicle and locate the oil pan, drain bolt and the old oil filter.

Move the used oil catch container to below the oil drain bolt and remove it with a 13mm socket by turning it counter clockwise.

Be careful, since the old oil may be hot enough to cause burns depending on how long you warmed up the engine in the first step.

Used Oil Catch Container
Twist Off Old Oil Filter
Old Oil Draining Out
Allow the old oil to drain out for at least a few minutes, then re-insert the 13mm drain bolt and tighten it to just past hand tight or about 20-25 ft lbs of torque.

Move the used oil catch container forward to just below the old oil filter and twist it off by turning it counter clockwise.

If you have trouble removing the old filter, use an oil filter wrench such as the Lisle 63600.

Allow the old oil to drain from the oil filter threads for a minute or two.


Dip Finger In New Oil
Lubricate Filter O-Ring
Tighten Oil Drain Bolt
I recommend buying the Mobil 1 M1-102 oil filter since it has excellent reviews on Amazon.

Dip your pinky finger into some of the new 5W-20 oil and then run it around the rubber o-ring on the new oil filter.

Lubricating the rubber o-ring on the new filter helps it to form a better seal which prevents leaks and also makes it much easier to spin off at the next oil change.

Tighten New Oil Filter
Insert Automotive Funnel
Pour In New 5W-20 Oil
Clean the area around the oil filter receptacle and ensure that the rubber o-ring from the old filter is not stuck in place.

Twist the new oil filter on to the threads by hand in the clockwise direction until it is 1/4 to 1/2 turn past hand tight.

Do not over tighten the new filter since the rubber o-ring could become damaged and lead to an oil leak.

Double check that the oil drain bolt and new oil filter are tight before moving to the engine bay.

Insert the automotive funnel into the oil filler hole and pour in about 5 quarts of the engine's 6 quart total capacity.

Replace the oil filler cap, run the engine for a minute, let it rest for a few minutes, and check the oil level on the dipstick.

Engine Oil Level Dipstick
Check Oil Level
Replace Oil Filler Cap
Slowly add more oil into the oil filler hole while repeatedly checking the dipstick until the level reaches the full mark.

You may not need to use the entire 6 quarts of new SAE 5W-20 oil depending on how long you let the old oil drain out.

When the oil level is correct, re-insert the oil filler cap and tighten it by turning it clockwise.

Be sure to check the oil level on the dipstick several times over the next week and watch your driveway for oil spots that may indicate a leak from the oil drain bolt or oil filter. Record the mileage and oil change details in your service record book.

For more, check out my other Jeep Wrangler Repair & Maintenance Guides.

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