Gas Grand Cherokee service notes
Gas Grand Cherokee engines range from older inline engines to high-output V8s, so service needs can differ even within the same model year range. Oil change intervals commonly vary widely (for example, scheduled ranges can span about 5,000 to 13,000 km and 3 to 60 months), so follow the plan shown for your selected engine such as the 3.6 V6 or 5.7 V8 HEMI. Alongside routine oil and filter changes, keep an eye on ignition-related maintenance (spark plugs and coils) and air-intake filtration, as these can affect drivability and fuel economy. If your model is used for towing or lots of short trips, it may suit the shorter end of the listed interval range.