2012 Jeep Grand Cherokee Owner Manual SRT - Page 524

522 MAINTAINING YOUR VEHICLE CAUTION! Do not use chemical flushes in your engine oil as the chemicals can damage your engine. Such damage is not covered by the New Vehicle Limited Warranty. Synthetic Engine Oils You may use synthetic engine oils provided the recommended oil quality requirements are met, and the recommended maintenance intervals for oil and filter changes are followed. Materials Added To Engine Oil Engine Oil Viscosity The manufacturer strongly recommends against the adSAE 0W-40 engine oil is preferred for use in all operating dition of any additives (other than leak detection dyes) to temperatures. the engine oil. Engine oil is an engineered product and The engine oil filler cap also shows the recommended it's performance may be impaired by supplemental engine oil viscosity for your engine. For information on additives. engine oil filler cap location, refer to "Engine CompartDisposing Of Used Engine Oil And Oil Filters ment" in Maintaining Your Vehicle" for further Care should be taken in disposing of used engine oil and information. oil filters from your vehicle. Used oil and oil filters, indiscriminately discarded, can present a problem to the environment. Contact your dealer, service station, or governmental agency for advice on how and where used oil and oil filters can be safely discarded in your area.