Symptom Tree t103
| Cause | Correction |
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Identify lubricating oil contamination |
Perform an oil analysis to determine the contaminants. |
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Bulk oil supply is contaminated |
Check the bulk oil supply. Drain the oil and replace with non-contaminated oil. Replace the oil filters. Refer to Procedure 007-083 in Section 7. Also, refer to |
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Internal coolant leaks |
Refer to the Coolant Loss – Internal symptom tree. |
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Lubricating oil sludge is excessive |
Change the oil and filters. Refer to the Lubricating Oil Sludge in the Crankcase is Excessive symptom tree. |
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Fuel in the lubricating oil |
Refer to the Fuel in the Lubricating Oil symptom tree. |
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Combustion gas contamination |
Check for excessive engine blowby. Refer to Procedure 014-010 in Section 14. If crankcase gases are excessive, refer to the Crankcase Gases (Blowby) Excessive symptom tree. |
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Transmission or hydraulic fluid is in the lubricating oil |
Refer to the OEM service manual. |
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