Preliminary
| The causes of excessive oil consumption may include the following conditions:
| • | 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, approximately 2-3 minutes, and check for the
correct engine oil level. |
| | 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 not fitted to the cylinder bore |
|
