Was trying to do a 10,000 mile interval, but overshot by a week, so it's 13,000 miles. Transporting trailers in hot weather. Ran almost entire time with EGR valve unplugged in order to see the effect on oil oxidation.
Polaris Comments:
Flagged data does not indicate an immediate need for maintenance action. Continue to observe the trend and monitor equipment and fluid conditions. Flagged additive levels are different than what should be present for the identified lubricant. This may have been topped off with a different lubricant, the fluid may be misidentified, or a different lubricant or formulation may have been in use prior to a recent change. Please provide COMPONENT MANUFACTURER and MODEL to compare data to the correct standards for this component.
At least they didn't complain about oxidation and viscosity increasing out of grade.
Iron wear rate dropped by almost 50% compared to the previous UOA.
Aluminum dropped by more than 50%.
Soot decreased by about 20%.
Viscosity is still in grade.
Oxidation decreased by 25%.
So overall, I would say that unplugging the EGR valve was helpful.
Polaris Comments:
Flagged data does not indicate an immediate need for maintenance action. Continue to observe the trend and monitor equipment and fluid conditions. Flagged additive levels are different than what should be present for the identified lubricant. This may have been topped off with a different lubricant, the fluid may be misidentified, or a different lubricant or formulation may have been in use prior to a recent change. Please provide COMPONENT MANUFACTURER and MODEL to compare data to the correct standards for this component.
At least they didn't complain about oxidation and viscosity increasing out of grade.
Iron wear rate dropped by almost 50% compared to the previous UOA.
Aluminum dropped by more than 50%.
Soot decreased by about 20%.
Viscosity is still in grade.
Oxidation decreased by 25%.
So overall, I would say that unplugging the EGR valve was helpful.