During a cooling system inspection, a technician notices that the coolant is rusty brown in color. This condition MOST likely indicates:

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ACorrosion in the cooling system
BOil contamination
CNormal condition for extended-life coolant
DAir entering the cooling system

✓ Correct answer: A. Corrosion in the cooling system Rusty brown coolant typically indicates corrosion within the cooling system, which occurs when the corrosion inhibitors in the coolant have broken down or the wrong type of coolant was used.

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During a cooling system inspection, a technician notices that the coolant is rusty brown in color. This condition MOST likely indicates:

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