For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2009 🢒 Escalade EXT 🢒 Engine 🢒 Engine Mechanical - Hybrid (HP2) 6.0L (LFA) 🢒 Oil Consumption Diagnosis

Oil Consumption Diagnosis for Cadillac Escalade EXT 2009

Checks

Causes

Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description.

Excessive oil consumption, not due to leaks, is the use of 1 L (1 qt) or more of engine oil within 3 200 kilometers (2,000 miles).

Preliminary

The causes of excessive oil consumption may include the following conditions:

•	External oil leaks

Refer to Oil Leak Diagnosis.

•	Incorrect oil level or improper reading of the oil level indicator

With the vehicle on a level surface, run the engine for a few minutes, allow adequate drain down time, 2-3 minutes, and measure for the correct engine oil level.

•	Improper oil viscosity

Refer to the vehicle owners manual and use the recommended SAE grade and viscosity for the prevailing temperatures.

•	Continuous high speed driving and/or severe usage

•	Crankcase ventilation system restrictions or malfunctioning components

•	Worn valve guides and/or valve stems

•	Worn or improperly installed valve stem oil seals

•	Piston rings broken, worn, or not seated properly

Allow adequate time for the rings to seat.

Replace worn piston rings, as necessary.

•	Piston and rings improperly installed or not fitted to the cylinder bore