Bus no. 154: monitoring through oil samples
Original laboratory reports and customer documents are provided in Russian.
A fresh sample and sequential in-service monitoring results for Diesel Force Ultra 10W-40.
- Company
- Lipetskpassazhirtrans
- Equipment
- Bus · fleet no. 154
What the studies showed
15 000 kmOperating mileage in the most recently supplied test report
The parameters were within normal limits at an early stage. Copper accumulation and reduced viscosity were noted later. Depending on the sample, the laboratory recommended an oil change or additional monitoring and fuel system diagnostics.
Conditions and methodology
In-service sampling and testing at MITs GSM. Conditions, methods and specific samples are detailed in the original documents.
The results relate to the specified samples and equipment. Operating mileage or hours in an individual trial do not constitute a recommended drain interval for other machines. Follow the equipment manufacturer's instructions and all comments in the test reports.
Documents and analysis results
Original PDFs are available to view and download. The meaning of the laboratory's comments has been retained.
Test report No. 639793 · 23.05.2023
Test report No. 646086 · 13.06.2023
Test report No. 658809 · 12.07.2023
Test report No. 712737 · 12.12.2023
Laboratory observations for each test report
Test report No. 639793 · 23.05.2023
The reported parameters are typical of an engine oil and are within normal limits. More accurate interpretation of the results requires comparison with this product's certified properties.
Test report No. 646086 · 13.06.2023
All oil parameters are within normal limits. Continued use is possible.
Test report No. 658809 · 12.07.2023
Copper content is critically elevated. Oil viscosity is slightly reduced. The other oil parameters are within normal limits. An oil change is recommended.
Test report No. 712737 · 12.12.2023
Copper content is elevated. Oil viscosity is slightly reduced. The other oil parameters are within normal limits. During further operation, pay close attention to changes in oil viscosity and copper accumulation. Carry out fuel system diagnostics. Repeat oil testing after a short period of operation.
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