Oil Consumption Diagnosis. Cadillac Catera 1999

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 1999 🢒 Catera 🢒 Engine 🢒 Engine Mechanical - 3.0L 🢒 Oil Consumption Diagnosis

Checks

Causes

Excessive oil consumption (not due to leaks) is the use of 0.95 liters (1.0 qt) or more of engine oil within 2 414 kilometers (1,500 miles).

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

Preliminary

•	External oil leaks

Refer to oil leak diagnosis.

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

After running the vehicle on a level surface for a few minutes, turn the engine off and for allow adequate drain down time (2-3 minutes) and check for the correct engine oil level.

•	Inspect for 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, not seated properly

Allow adequate time for the rings to seat.

Replace worn piston rings as necessary.

•	Piston and rings improperly installed or miss-fitted to the cylinder bore