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Hello! On my Megane DCI (2014) the coolant level is droping from max to min in a matter of a week. The car stays 6 days in garage. On the 7 day run for about 120 kms. Is this normal? No leaks on the floor or in another place inside the engine bay or footwell.
 

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Grand Scenic 1.6 2007
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No. The level should remain steady for the length of the life of the coolant. Losing that amount in 120km is a serious leak. Leaks tend to be worse when hot and under pressure. The problem with that is that the coolant evaporates away and you see little or nothing. It could also be the water pump which is hard to see under normal circumstances.
Check all the hoses that you can see for dried whitish deposits around the clamps. Get under the car at the water pump after a run. A garage could do a pressure test for you if you can't find anything.
 

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Hello! The problem was located on kind of "canister", where all the hoses are connect. It's made from plastic... The mecanic told me that the Captur as the same problem...
 

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I dont suppose you could elaborate on what the "captur" is and how they found whatever that is to be the issue ?

or do you mea. the thermostat?
 

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and canister plastic thing that hoses come too ?
tis so useful if people go to the bitter end with issues.

I assume he means the thermostat housing was leaking
 

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Technical Supremo, Platinum Member
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No matey, the intercooler isn’t water cooled afaik. It’s almost certainly the thermostat housing.
 

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Hello! On my Megane DCI (2014) the coolant level is droping from max to min in a matter of a week. The car stays 6 days in garage. On the 7 day run for about 120 kms. Is this normal? No leaks on the floor or in another place inside the engine bay or footwell.
 
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