Mine is an I-6 and I use 10W-30. Takes 5 quarts.
If it is a 4cyl, it will probably take 4 quarts.
____________________________________________________________
It is recommended in the lower states to use 20w50 (6 quarts) in the inline 6 4.0 or 10w30 (6 quarts)in northern states. The 4 cylinder on the other hand takes 10w30 (5 quarts) or 5w30 (5 quarts). Jeeps prefer a quality oil Castrol is what we use. Try to stay away from parafin based oils such as Penzoil.
it should be 10/30
Any name brand 10w30.
A 2008 Jeep Wrangler uses 5W20 engine oil.
The transfer case takes atf, use dextron.
10w30
10W30
10w30
10w30
10w30
10w30
10w30
Mopar 5W20