Jeep Grand Cherokee 2016 Owner's Manual page 728

726 MAINTAINING YOUR VEHICLE
Component
Engine Oil – 5.7L Engine
Engine Oil Filter
Spark Plugs
Fuel Selection – 3.6L Engine
Fuel Selection – 5.7L Engine
Fluid, Lubricant, or Genuine Part
We recommend you use API Certified SAE 5W-20
Engine Oil, meeting the requirements of FCA Material
Standard MS-6395 such as MOPAR, Pennzoil, and Shell
Helix. Refer to your engine oil filler cap for correct SAE
grade.
We recommend you use MOPAR Engine Oil Filter or
equivalent.
We recommend you use MOPAR Spark Plugs.
87 Octane, 0-15% Ethanol.
89 Octane Recommended - 87 Octane Acceptable, 0-15%
Ethanol.