The 2018+ Wrangler JL uses the same 3.6L V6 as the 2012-2018 Wrangler JK. There are some internal tweaks, but it’s mostly the same on the outside. A redesign of the top engine cover makes accessing the filter possible without removing the cover.
Changing your oil yourself can save you some money but mostly it saves time over taking your Jeep to a shop.
What to buy
- Oil – The JL calls for 5 quarts 0W-20 oil, usually only available in full synthetic. We don’t have a recommendation on brand but we tend to stay with name brand. Often auto parts stores have deals on filter/oil combo.
- Filter – The 3.6L uses a filter that loads on the top side of the engine. We used a Fram Extra Guard Oil Filter, CH11665. The Mopar Oil Filter version is MO-349, Part #68191349AB
Tools and supplies
- 13mm socket
- 24mm socket
- Ratchets
- Oil drain container
- Rags
How to
The great thing about a Jeep is that usually, you can change the oil without needing to raise the Jeep. With the oil drain container under the Jeep use the 13mm socket to remove the drain plug. Allow the oil to drain.
 |  |  |
While the oil is draining use the 24mm socket to remove the oil filter, the filter snaps into the cover and will come out with the cover. Pull out the filter from the cover and snap in the new filter. The new filter should come with a replacement o-ring. Remove the old o-ring from the cover and replace it with the new one. Place the assembly back in the engine.
 |  |
 |  |
By this point the oil should have drained from the engine. Replace the plug and clean up the area to remove any oil mess.
 |  |
So with the filter and plug in place remove the oil filler cap and pour the new oil into the engine. Clean any excess and replace the cap. Start the engine and observe oil pressure.
Resetting the oil life indicator
Without pressing the brake pedal press the Start/Stop Engine button to the On/Run position. Don’t start the engine.
Navigate to the Oil Life menu in the instrument cluster display.
Push and hold the OK button until the oil life indicator resets to 100%.
That’s about it
Make sure you dispose of used oil properly.
jeepfan.com 2018 JL Wrangler Unlimited Rubicon
