10-8 Vehicle CareSpecificationUse and ask for licensed engine oilswith the dexos1® approvedcertification mark. Engine oilsmeeting the requirements for thevehicle should have the dexos1approved certification mark. Thiscertification mark indicates that theoil has been approved to the dexos1specification.Notice: Failure to use therecommended engine oil orequivalent can result in enginedamage not covered by thevehicle warranty. Check with yourdealer or service provider onwhether the oil is approved to thedexos1 specification.Viscosity GradeSAE 5W-30 is the best viscositygrade for the vehicle. Do not useother viscosity grade oils such asSAE 10W-30, 10W-40, or 20W-50.Cold Temperature Operation: In anarea of extreme cold, where thetemperature falls below −29°C (−20°F), an SAE 0W-30 oil may be used.An oil of this viscosity grade willprovide easier cold starting for theengine at extremely lowtemperatures. When selecting an oilof the appropriate viscosity grade,always select an oil of the correctspecification. See “Specification”earlier in this section for moreinformation.Engine Oil Additives/EngineOil FlushesDo not add anything to the oil. Therecommended oils with the dexosspecification and displaying thedexos certification mark are all thatis needed for good performance andengine protection.Engine oil system flushes are notrecommended and could causeengine damage not covered by thevehicle warranty.What to Do with Used OilUsed engine oil contains certainelements that can be unhealthy foryour skin and could even causecancer. Do not let used oil stay onyour skin for very long. Clean yourskin and nails with soap and water,or a good hand cleaner. Wash orproperly dispose of clothing or ragscontaining used engine oil. See themanufacturer's warnings about theuse and disposal of oil products.Used oil can be a threat to theenvironment. If you change yourown oil, be sure to drain all the oilfrom the filter before disposal. Neverdispose of oil by putting it in thetrash or pouring it on the ground,into sewers, or into streams orbodies of water. Recycle it by takingit to a place that collects used oil.