Below are the AMSOIL oil and filter recommendations for your 2008 Harley Davidson FXLH Road King:
2008 Harley Davidson FXLH Road King
The Road King produces 92 foot-pounds of torque at 3,000RPM from a 1584cc air cooled Twin Cam 96 engine. AMSOIL synthetic motorcycle oil is an excellent premium choice to provide long life and top performance in your air cooled Harley Road King.
Here is what you need:
You need 4 quarts of AMSOIL 20W-50 Advanced Synthetic Motorcycle Oil which you can learn more about here: AMSOIL synthetic motorcycle oil 20W50
You need the AMSOIL nano fiber long life oil filter for your Harley which is: EAOM134 (this is the black filter)
EAOM134C (this is the chrome filter)
To learn how to get wholesale dealer pricing and fastest and easiest location to get AMSOIL for your Harley Road King go to: Where can I buy AMSOIL for Harley Davidsons