Black plate (12,1)Cadillac CTS Owner Manual (GMNA-Localizing-Europe-8087685) - 2015 -crc - 8/13/1410-12 Vehicle CareIf no coolant is visible in the coolantsurge tank, add coolant as follows:How to Add Coolant to theCoolant Surge Tank{ CautionThis vehicle has a specificcoolant fill procedure. Failure tofollow this procedure could causethe engine to overheat and beseverely damaged.If no problem is found, check to seeif coolant is visible in the coolantsurge tank. If coolant is visible butthe coolant level is not at the bottomof the fill neck, add a 50/50 mixtureof clean, drinkable water andDEX-COOL coolant at the coolantsurge tank, but be sure the coolingsystem, including the coolant surgetank pressure cap, is cool beforeyou do it.{ WarningSteam and scalding liquids from ahot cooling system can blow outand burn you badly. Never turnthe cap when the cooling system,including the surge tank pressurecap, is hot. Wait for the coolingsystem and surge tank pressurecap to cool.{ 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 theoverheat warning. The engine(Continued)Warning (Continued)could catch fire and you or otherscould be burned. Use a 50/50 mixture of clean, drinkablewater and DEX-COOL coolant.{ CautionIn cold weather, water can freezeand crack the engine, radiator,heater core, and other parts. Usethe recommended coolant andthe proper coolant mixture.{ WarningYou can be burned if you spillcoolant on hot engine parts.Coolant contains ethylene glycoland it will burn if the engine partsare hot enough. Do not spillcoolant on a hot engine.