Posted by Mark Blog

bmw engines are prone to blocked breather system

a blocked breather will cause a brand new turbo to leak oil and cause failure so this must be addressed before fitting replaced or repaired turbo.   pressurised oil disappears at the turbo and so is gravity fed to the sump, if the engine is not breathing correctly then the oil cannot escape to the sump at the correct rate and so backs up and through the turbo seals.

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