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Message: <blockquote data-quote="t2ribena" data-source="post: 685466" data-attributes="member: 3847">on no 3, its hard to confirm as n52 has no dipstick to check if the sensor works...the oil level and cbs sensor is some sort of a capacitor and the oil is the dielectric...there is possibilty that the sensor is faulty so pls get the car diagnose if there is any error code on this sensor...if no error, you can confirm by draining the oil into a clean container (if u want to reuse) and measure the amount of oil left...if im not mistaken it shud be about 6.5l to 7l for n52...this is to confirm if the sensor works...i used only castrol 5w-30 LL01 oil on my ex e60 with n52 engine for 130k km without any issue and topping up of oil with 7k km service interval...my opinion, its the oil...the sensor and the cbs algorithm might not be compatible with the LL04 oil which is low saps engine oil...which could provide a different reading on this 'capacitor' sensor</blockquote>