Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-Europe-9367723) -2016 - CRC - 10/9/15264 Vehicle CareEngine CoolantThe cooling system in the vehicle isfilled with DEX-COOL enginecoolant. See ScheduledMaintenance 0 325 andRecommended Fluids andLubricants 0 328.The following explains the coolingsystem and how to check and addcoolant when it is low. If there is aproblem with engine overheating,see Engine Overheating 0 267.What to Use{ WarningAdding only plain water or someother liquid to the cooling systemcan be dangerous. Plain waterand other liquids, can boil beforethe proper coolant mixture will.The coolant warning system is setfor the proper coolant mixture.With plain water or the wrongmixture, the engine could get toohot but you would not get the(Continued)Warning (Continued)overheat warning. The enginecould catch fire and you or otherscould be burned. Use a50/50 mixture of clean, drinkablewater and DEX-COOL coolant.Use a 50/50 mixture of cleandrinkable water and DEX-COOLcoolant. This mixture:. Gives freezing protection downto −37 °C (−34 °F), outsidetemperature.. Gives boiling protection up to129 °C (265 °F), enginetemperature.. Protects against rust andcorrosion.. Will not damage aluminiumparts.. Helps keep the proper enginetemperature.CautionIf improper coolant mixture,inhibitors, or additives are used inthe vehicle cooling system, theengine could overheat and bedamaged. Too much water in themixture can freeze and crackengine cooling parts. The repairswould not be covered by thevehicle warranty. Use only theproper mixture of engine coolantfor the cooling system. SeeRecommended Fluids andLubricants 0 328.Never dispose of engine coolant byputting it in the refuse, pouring it onthe ground, or into sewers, streams,or bodies of water. Have the coolantchanged by an authorised servicecentre, familiar with legalrequirements regarding usedcoolant disposal. This will helpprotect the environment and yourhealth.
