I do not know anything about cars, bear that in mind. Ha-ha. I drive a 1997 Vauxhall Corsa (I'm a student) I went to drive to work this morning and realised my engine temp needle was going up and down up and down, until it hit 150. So i went to Asda and bought engine coolant, popped the bonnet up and saw coolant tank was completely empty. As my engine was a bit hot after the short journey i filled it half up and drove to work. The temp then went back down to normal around 90. When i got home I opened the bonnet again to check i had put enough in but it was completely empty again? I checked for leaks and couldn't find any. Please can someone tell me whether it is likely the head gasket has blown or if any other problems could be causing this. Thanks
It is normal to need to fill the tank a couple of times after you have found it low as sometimes an air pocket develops. I wouldn’t worry to much about this unless you find yourself adding 1/2 a gallon a week or more.
If you had a blown head gasket, you would experience poor engine performance and most likely see white smoke coming from the exhaust pipe.
If find you need to add coolant often, you will need to have the cooling system pressure tested and checked for leaks. Could be a leaking water pump, radiator or just a loose hose clamp.
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