Excessive Engine Oil Consumption

1. Restricted air intake duct to turbocharger compressor.
2. Air leak in duct from compressor to intake manifold.
3. Air leak at intake manifold to engine mating surface.
4. Restricted exhaust system.
5. Restricted turbocharger oil drain line.
6. Restricted PCV system.
7. Restricted turbocharger center housing.
8. Internal engine problem. Engine blow-by, worn or damaged pistons, rings or valves.
9. Dirt on compressor wheel and or diffuser vanes.
10. Damaged turbocharger.