Preliminary
| The causes of above acceptable oil consumption may include the following conditions:
• | Incorrect oil level or incorrect 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. |
• | Incorrect 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 extreme usage. |
• | Crankcase ventilation system restrictions or malfunctioning components. |
• | Worn valve guides and/or valve stems. |
• | Worn or incorrectly installed valve stem oil seals. |
• | Piston rings broken, worn, or not seated correctly |
| Allow adequate
time for the rings to seat. |
| Replace worn piston rings as necessary. |
• | Piston and rings incorrectly installed or not fitted to the cylinder bore. |
|