The illustration below shows the location of the caps for the radiator and the translucent plastic recovery tank. Do not remove the recovery-tank cap or radiator cap before the engine has adequately cooled. Caution: When the vehicle is fully warmed up, the coolant is boiling hot and under pressure. To find a leak, first drive the car until it's fully warmed up, then park it on a clean, dry section of pavement-a driveway if possible.The car starts running hot or overheating.Engine oil is gold or black (when dirty), and transmission fluid is dark red. Antifreeze makers use those dye colors to differentiate coolant from other fluids used in cars. Puddles under the car of lime-green, orange, pink, or blue-green after you've parked.You might be able to smell it from behind the wheel as well. A sweet aroma that you notice from outside the vehicle, coming from the vehicle after you've driven it.Worse yet, your engine can overheat, sustaining expensive and possibly terminal damage. If an engine is low on coolant, it can run too hot, which will hurt both performance and fuel economy. A pump on the engine circulates the coolant through the radiator, engine, and heater and keeps your engine running at the proper temperature-and not overheating-regardless of the outside temperature. Your engine's radiator is actually filled with what's called coolant, a 50-50 mix of antifreeze and water. It's part of your vehicle's cooling system, which controls the engine's temperature so that it runs properly and doesn't overheat. If your vehicle is leaking antifreeze, the problem needs to be repaired promptly, before it causes much bigger, more costly issues.ĭespite its name, antifreeze does more than just keep your vehicle's radiator from freezing up in winter. Antifreeze plays a key part in keeping your engine running properly, so it's important to know if it's leaking. If you've noticed an odd, sweet smell coming from your car after you shut the engine off you might have an antifreeze leak.
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