Thread: N53 smoke
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      04-19-2018, 04:44 PM   #2
poggy
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United Kingdom
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Drives: E90 318i SE
Join Date: Mar 2007
Location: UK

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Whilst you have relatively few miles, things such as seals deteriorate with time exposure to heat and oil so that is a possibility depending on the age of your car.
However, if you are not losing that much oil, that would suggest the cause is otherwise.
Perhaps the first question that should be asked is if you are sure it's oil and not just water vapour - condensation can occur in the engine and exhaust, especially if cold and so perhaps that's the issue.
In answer to the question about passage of oil, the CCV oil separator should prevent the majority of oil from entering the inlet manifold if working correctly but I think there will always be a little oil vapour that gets through.
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