It acts as a safety valve, accommodating the expansion of coolant as the engine heats up and the contraction as it cools down. Understanding the Antifreeze Reservoir and Its Role The antifreeze reservoir, often called the overflow tank or coolant expansion tank, is a vital component of a vehicle's cooling system.
Antifreeze Reservoir Flush Procedure: Step-by-Step Guide
Cracked Engine Block or Cylinder Head Metal components can also fail due to extreme heat or physical stress. Recognizing the Symptoms Beyond the visual confirmation of oil in the reservoir, there are several performance issues that indicate this problem is progressing.
This mixture of oil and coolant indicates a breach in one of the critical barriers that keep the two fluids separate, and it requires immediate attention to prevent severe and costly engine damage. A crack in the engine block or cylinder head can create a direct tunnel between the oil galleries and the water jackets.
Antifreeze Reservoir Flush Procedure to Remove Contaminants
When these barriers fail, pressurized coolant can force its way into the oil passages, or vice versa, leading to the contamination visible in the reservoir. Oil loses its ability to lubricate when mixed with coolant, causing increased friction and wear on bearings, camshafts, and other critical components.
More About Oil in antifreeze reservoir
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