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 (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 miss-fitted to the cylinder
bore |
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