On a bright sunny day, you notice a cloud is forming - around your Cadillac radiator! That steam cloud is the clear sign that your radiator is boiling over. You instantly pull over and turn the engine off to avoid a major overheating episode that would blow your gasket, crack the head and lead to total engine failure. But now what? Do not be tempted to simply blame it on bad coolant or low water levels, and then do a flush and coolant change. Unfortunately, that will not remove the corrosion that has built up on the interior of the radiator. Once the corrosive and rust process has begun, it is impossible to stop. If you have diagnosed that the coolant system failure stems from the radiator, it might be time to replace it entirely. If you are tempted to use a coolant additive, check with your dealership or repair manual if that is a wise idea. Be aware that coolant sealing tablets can contaminate the cooling system, especially for older iron engines. First clean and flush the Cadillac coolant system to get rid of whatever corrosive residue is in the lines. While you are at it, install a new thermostat and gasket, and then a new radiator. Order that radiator from our site, and be assured that you are receiving a high-quality part that will stand up to the stress of heat, usage and corrosion.