Oil Consumption Diagnosis

Oil Consumption Diagnosis
Excessive oil consumption, not due to leaks, is the use of 0.9 L (1 qt.) 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 Ream guides and install oversize service valves and/or new valve stem oil seals.
^ 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