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2011 Nissan Xtrail, 2L diesel, 160.000 km.

I noticed that while driving, coolant level drops below minimum mark. If i let the engine cool down, level rises to the same mark, almost to max.

What could.it be?

Thanks

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    What you are describing is the exact opposite of how this should work. Automotive cooling systems are pretty simple. When water/coolant heats up it expands. The opposite happens when it cools. Exorcist, perhaps? – Tim Nevins Apr 30 '19 at 13:33
  • @TimNevins I don't know... Thinking air bubbles in the system – eonootz Apr 30 '19 at 14:50
  • Are there any problems with it overheating? – Pᴀᴜʟsᴛᴇʀ2 Jul 4 '19 at 17:32
  • @Pᴀᴜʟsᴛᴇʀ2 Well, I think that the coolant from the overflow tank was going in an electric turbo cooler pump wich runs after turning the engine off. But i do have a new question open on a possible overheat problem with this car, maybe related...: mechanics.stackexchange.com/questions/68630/possible-overheat – eonootz Jul 4 '19 at 17:40
  • The reason if I asked if there was any overheating issues is, if there isn't any ... don't worry about it. It is probably running as designed. – Pᴀᴜʟsᴛᴇʀ2 Jul 4 '19 at 17:49

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