| Characteristic |
Interaction |
Possible Cause |
| |
|
|
| Viscosity - Low |
High iron & high chromium
|
Ring/liner wear
See Fuel Dilution - High
* Fuel injector leak or malfunction
* Ring/liner wear
Oil quality
|
| Viscosity - High |
High oxidation
High soot
Coolant dilution
|
High oil temperature
See Soot - High
* Excessive idling
* Overfueling
* Restricted air inlet
* Bearing distress
See Coolant - High
* Cracked cylinder head
* Broken head bolt
* Broken head gasket
* Bearing corrosion
* Plugged oil filter
|
| Soot - High |
High iron & high chromium
High lead
|
Excessive idling
Overfueling
Restricted air inlet
Bearing distress
|
| Iron - High |
High chromium
High soot
|
Ring/liner
Valve train wear
|
| Coolant - High |
High sodium
High lead
High viscosity
|
Cracked cylinder head
Broken head bolt
Broken head gasket
Bearing corrosion
Plugged oil filter
|
| Fuel Dilution - High |
Low viscosity
High iron & high chromium
|
Fuel injector leak or malfunction
Ring/liner wear
|
| Copper - High |
Low lead
Low tin
|
Oil cooler interaction
|
| Copper - High |
High lead
High tin
|
Bearing wear
|
| Silicon - High |
High iron
|
Dirt ingestion
|
| Silicon - High |
Low iron
|
Silcone gasket interaction
|
| Additive Metals - Low |
Low calcium
Low magnesium
Low zinc
Low phosphorous
|
Poor oil quality
|
| Total Base Number - Low |
High iron
High viscosity
|
Overextended oil drain
Poor oil quality
|
