Engine Oil Consumption Diagnosis

Definition
Excessive oil consumption (not due to leaks) is the use of 1.9 l (2 quarts) or more of engine oil within 3,200 kilometers (2,000 miles).

The Causes Of Excessive Oil Consumption Include The Following Conditions:
^ External oil leaks. Tighten bolts and/or replace gaskets and oil seals as necessary.
^ Incorrect oil level or improper reading of oil level indicator. With the vehicle on a level surface, allow adequate drain down time and check for the correct oil level.
^ Improper oil viscosity. Use recommended SAE viscosity for the prevailing temperatures.
^ Continuous high speed driving and/or severe usage.
^ Crankcase ventilation system restrictions or malfunctioning components.
^ Valve guides and/or valve stem oil seals worn, or the seal omitted.
^ Piston rings broken, improperly installed, worn, or not seated properly. Allow adequate time for rings to seat. Replace broken or worn rings as necessary.
^ Piston improperly installed or mis-fitted.