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Coolant disappearing?


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How much is it using?

When the engine is hot, can you see any bubbling in the coolant expansion tank?

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if you cant see any obvious leaks then check the cap on the expansion tank for a good seal and also the carpets around the heater matrix and the exhaust for excessive white smoke (smell it for antifreeze) you'd probably have hard coolant pipes and bubbles in the expansion tank too if head gaskets going. Take the top of the cambelt cover off and have a good look at the water pump for drips too.

Edited by Sausage
added somink
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do an oil change and make sure it isn't going in the sump, how much are you topping up and how frequently? (how many miles between top up)

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That's quite a small leak so it could be a pin hole in the radiator, most will evaporate so you dont get a handy puddle to help you find it. A garage should be able to do proper tests to find it, pressure test, coolant and exhaust gas analysis. If not then you will have to do some sleuthing of your own to track it down. 

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