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*Trace metals - indicates how an engine is internally wearing. Most helpful when repeated test are done. | *Trace metals - indicates how an engine is internally wearing. Most helpful when repeated test are done. | ||
*Particulate - indicates how well the oil filter is performing | *Particulate - indicates how well the oil filter is performing | ||
*Fuel & glycol - can indicate a leaking head gasket or worn rings | *Fuel & glycol - can indicate a leaking [[head gasket]] or worn rings | ||
*TBN (Total Base Number) - indicates how well the additive package is holding up. Helps determine if the motor oil is being used for too long, or could be used longer. | *TBN (Total Base Number) - indicates how well the additive package is holding up. Helps determine if the motor oil is being used for too long, or could be used longer. | ||
*Viscosity - indicates how well the oil is holding up. Helps determine if the motor oil is being used for too long, or could be used longer. | *Viscosity - indicates how well the oil is holding up. Helps determine if the motor oil is being used for too long, or could be used longer. |
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