depending on the engine! 90% of chryslers new cars are using 5w-20, no longer using 5w-30. they originally started using it only on the 2005 and up hemi engines because they were experiencing start up issues. also, that oil allows for better gas mileage. but i think the new wranglers are now using the 3.8L engine, same as in their minivan, which calls for 5w-20. as far as oil brand, my dealership uses mobile oil, best you can buy. look up the specs on it, mobile oil has been the leader in oil durability for a while.
Mopar brand
5w30
mopar from chrysler
Mophar either 5 or 10 w-30
Not usually synthetic but its ok to use it.
most likely not synthetic
depending on the engine! 90% of chryslers new cars are using 5w-20, no longer using 5w-30. they originally started using it only on the 2005 and up hemi engines because they were experiencing start up issues. also, that oil allows for better gas mileage. but i think the new wranglers are now using the 3.8L engine, same as in their minivan, which calls for 5w-20. as far as oil brand, my dealership uses mobile oil, best you can buy. look up the specs on it, mobile oil has been the leader in oil durability for a while.