Below are the AMSOIL oil and filter recommendations for your 2008 Jeep Wrangler 3.8L 6-cyl engine:
2008 JEEP WRANGLER 3.8L 6-cyl Engine Code 
The 3.8L V6 cranks out 202 horsepower and 237 foot-pounds of torque with a cast iron block and aluminum alloy heads. AMSOIL synthetic motor oil is an excellent choice to provide long life and top performance in your Jeep Wrangler.
Here is what you need:
You need 6 quarts of AMSOIL Premium API CJ-4 Synthetic 5W-30 Motor Oil which you can learn more about here: AMSOIL synthetic motor oil 5W20
You need the AMSOIL nano fiber long life oil filter for your Jeep which is: EA15K51
To learn how to get wholesale dealer pricing and fastest and easiest location to get AMSOIL for your Jeep Wrangler go to: Where can I buy AMSOIL for Jeep Wrangler
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