Symptom: An engine’s cooling system is overheating. The coolant level is low, but there are no visible leaks and no water in the engine crankcase to hint of water jacket or cylinder head problems.

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Q:I have a 2002 Ford Ranger with 218,000 miles. Lately, after my truck is warmed up and I shut it off, it builds pressure in the overflow reservoir and bubbles out of the lid. At first, I thought it ...

Flushing and replacing coolant is a moderately difficult repair job. Consult the owner's manual, your car’s manufacturer, or a trusted mechanic for more specific information on your vehicle. You take ...

The best way forward here is to take the car to a workshop that knows Audis and have them pressure test the cooling system. Modern cars have sealed coolant systems, suggesting that they shouldn’t lose ...