I discovered, upon random inspection, that my Chevy's coolant reservoir was empty. It has just made 100 000km. There was no leak I could detect. The car is rarely used as I stopped working. I topped the coolant with just under a litre of pure water and drove for under 50km. The reservoir was empty again. I am afraid to drive the car as I don't want to damage the engine. There was no overheating nor flashing lights. Was it right to have topped up with water? The car has never missed a service but recently serviced by a new company after GM left South Africa.
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Obviously the coolant is going somewhere and you need to find out WHERE it's going so that an appropriate repair can be made. The usual causes are things like leaking radiator or hose, leaking water pump, and leaking heater core. Other possible causes are leaking head gasket, warped or cracked cylinder head, and a warped or cracked engine block.– jwh20Dec 16, 2019 at 13:59
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1Problem solved. The leak was on the coolant reservoir. For days it was undetectable until I took it to the service company. There, the leak burst for everyone to see before inspection. It was replaced and filled with coolant. It looks like most Cruze vehicles develop similar issues after five years on the road, according to service technician who attended to my car.– MalsoseDec 17, 2019 at 12:22
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Congrats on finding the problem. You should post this as an answer to your own question!– mike65535Dec 17, 2019 at 15:36
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Problem solved. The leak was on the coolant reservoir. For days it was undetectable until I took it to the service company. There, the leak burst for everyone to see before inspection. It was replaced and filled with coolant. It looks like most Cruze vehicles develop similar issues after five years on the road, according to service technician who attended to my car.