Symptoms and consequences of excessively high excess pressure

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

Damage to sealing rings (shaft seals).
Oil dipstick slips out.
Increased oil consumption.
Oil in the air mass system after the point of introduction in the crankcase ventilation system.
Oil flow rate in the bearing of the exhaust turbocharger is reduced by the counter pressure in the oil return. This results in a risk of coking of the oil ducts in the exhaust turbocharger.