WHAT IT TELLS YOU:
When there is wear or dirt
When the viscosity increases
If there is water present
The level of oxidation
If there is contamination
If the oil will get its full life expectancy

WHAT IT DOESN’T TELL YOU:
Exactly how many hours until an oil change is required

PROPER USAGE:
Take oil samples at half the life expectancy and again 1,000 hours before
the recommended change
Retain analysis results for each unit and compare over time to check for
increases in wear or reductions in oil life