Turbocharger - Turbine Seal Oil Leak

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

Symptom	Possible Cause	Action	Reference
Turbocharger - Turbine Seal Oil Leak	Engine is operating for extended periods under light- or no-load conditions	Review the engine operating instructions.	-
	Obstructed turbocharger oil drain	Remove the turbocharger and inspect the oil drain for obstructions.	Removal and Installation
	Crankcase pressure is excessive	Check for excessive blowby. Refer to Crankcase Gases (Blowby) Excessive symptom diagnosis.	Crankcase Gases (Blowby) Excessive
	Exhaust restriction in the aftertreatment	Check for exhaust restriction in the aftertreatment. Inspect the aftertreatment diesel oxidation catalyst (DOC)/diesel particulate filter (DPF) decomposition tube assembly, the selective catalytic reduction (SCR) decomposition tube assembly, and the aftertreatment downpipe.	Checking Exhaust System Inspection After Removal
	Engine oil viscosity incorrect	Check the engine oil.	Inspection
	Oil entering the turbocharger from the engine	Remove the turbocharger from the engine to determine if the exhaust manifold outlet and turbine housing inlet are wet with oil. If oil is present, reference the Lubricating Oil Consumption Excessive system diagnosis.	Removal and Installation