370 SERVICING AND MAINTENANCEThe engine oil filler cap also shows therecommended engine oil viscosity for yourengine. For information on engine oil filler caplocation, refer to the “Engine Compartment”illustration in this section.Lubricants which do not have both the engineoil certification mark and the correct SAEviscosity grade number should not be used.Engine Oil Viscosity (SAE Grade) — DieselEngineWe recommend you use 5W-40 syntheticengine oil such as Mopar or Shell Rotella thatmeets FCA Material Standard MS-10902 andthe API CJ-4 engine oil category is required.Synthetic Engine OilsYou may use synthetic engine oils provided therecommended oil quality requirements are met,and the recommended maintenance intervalsfor oil and filter changes are followed.Synthetic engine oils which do not have both theengine oil certification mark and the correct SAEviscosity grade number should not be used.Materials Added To Engine OilThe manufacturer strongly recommendsagainst the addition of any additives (other thanleak detection dyes) to the engine oil. Engine oilis an engineered product and its performancemay be impaired by supplemental additives.Disposing Of Used Engine Oil And Oil FiltersCare should be taken in disposing of usedengine oil and oil filters from your vehicle. Usedoil and oil filters, indiscriminately discarded, canpresent a problem to the environment. Contactan authorized dealer, service station orgovernmental agency for advice on how andwhere used oil and oil filters can be safelydiscarded in your area.Engine Oil FilterThe engine oil filter should be replaced with anew filter at every engine oil change.Engine Oil Filter SelectionThis manufacturer's engines have a full-flowtype disposable oil filter. Use a filter of this typefor replacement. The quality of replacementfilters varies considerably. Only high qualityfilters should be used to assure most efficientservice. Mopar engine oil filters are high qualityoil filters and are recommended.Engine Air Cleaner FilterRefer to the “Maintenance Plan” in this sectionfor the proper maintenance intervals.NOTE:Be sure to follow the “Severe Duty Conditions”maintenance interval if applicable.CAUTION!Your vehicle is equipped with an advancedtechnology Diesel Engine and an emissiondevice designed to limit Diesel ParticulateEmissions from being released into the atmo-sphere. The durability of your engine and lifeexpectancy of this diesel particulate filteremission device is highly dependent on theuse of the correct engine oil.
