Special Service Message 52335 - 2018-2024 Expedition/Navigator + Other Models - Oil Leak - Turbocharger Oil Feed And Drain Tube Replacement

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SSM 52335 - 2015-2024 Various Vehicles - Oil Leak - Turbocharger Oil Feed And Drain Tube Replacement

For 2015-2024 Ford and Lincoln vehicles equipped with turbocharged engines and customer concern of an engine oil leak, refer to Workshop Manual (WSM), Section 303-00 for oil leak inspection and testing methods. Ford has evaluated turbochargers replaced for oil leak symptoms and although oil may collect on the external surface of a turbocharger, it is extremely rare for a turbocharger assembly to be the root cause of the oil leak. Careful inspection of the turbocharger oil feed and drain tubes should be performed along with the recommended WSM procedures as needed. Warranty claims for turbocharger replacement going forward will be assessed.


Supplemental diagnostic procedure from Expedition/Navigator Workshop Manuals (with 2018-2024 component illustrations added)...

PINPOINT TEST - EXTERNAL OIL LEAKS

Introduction Possible Causes Oil supply tube Oil return tube Gaskets Turbocharger NOTE: It is very unlikely for the turbocharger to leak engine oil externally. The moving parts of a turbocharger that require oil are contained in a housing with no external sealing surfaces. Pressurized engine oil is supplied to the turbocharger from the engine through an oil supply tube and drains back to the engine sump through an unpressurized return tube. The most likely source of an external oil leak would be from the oil supply or oil return tubes or the gaskets and seals.

D1 CHECK THE OIL SUPPLY TUBE Perform an oil leak inspection. Refer to 303-00 Engine System, Oil Leak Inspection for the engine being diagnosed. Visually inspect the oil supply tube for traces of oil. Check the engine and the turbocharger ends. Check for oil running down from other areas of the tube or the engine to locate the source of the leak. Check the oil supply tube gaskets and seals. Movement of the vehicle, under hood components or gravity can cause oil leaks to appear in different areas from the source of the oil leak. Follow the trace of the oil leak to the source. Is the oil supply tube leaking oil? 3.5L EcoBoost Turbocharger LH Oil Supply Tube 3.5L EcoBoost Turbocharger RH Oil Supply Tube Yes INSTALL a new turbocharger oil supply tube. REFER to 303-04 Fuel Charging and Controls - Turbocharger for the procedure. No - GO to D2

D2 CHECK THE OIL RETURN TUBE Visually inspect the oil return tube for traces of oil. Check the engine and the turbocharger ends. Check for oil running down from other areas of the tube or the engine to locate the source of the leak. Check the oil return tube gaskets and seals. 3.5L EcoBoost Turbocharger LH Oil Return Tube 3.5L EcoBoost Turbocharger RH Oil Return Tube Is the oil return tube leaking oil? Yes INSTALL a new turbocharger oil return tube. REFER to 303-04 Fuel Charging and Controls - Turbocharger for the procedure. No CARRY OUT an oil leak inspection. REFER to 303-00 Engine System, Oil Leak Inspection for the engine being diagnosed. CHECK for an engine oil leak.