Ram Trucks 2015 Chassis Cab Commercial - Owner Manual - Manual (Page 558)

Component Fluid, Lubricant, or Genuine Part
Engine Oil – 6.4L Engine For best performance and maximum protection under
all types of operating conditions, the manufacturer
only recommends full synthetic engine oils that meet
the American Petroleum Institute (API) categories of
SN. The manufacturer recommends the use of Penn-
zoil Ultra™ 0W-40 or equivalent MOPAR® engine oil
meeting the requirements of Chrysler Material Stan-
dard MS-12633 for use in all operating temperatures.
Engine Oil Filter – 5.7L/6.4L Engine We recommend you use MOPAR® Engine Oil Filters.
Spark Plugs – 5.7L/6.4L Engine We recommend you use MOPAR® Spark Plugs.
Fuel Selection – 5.7L/6.4L Engine 87 Octane Acceptable - 89 Octane Recommended.
556 MAINTAINING YOUR VEHICLE