Transmission oils perform several crucial tasks. They provide the
required lubrication and heat transfer in the compartments to achieve
optimum performance. The following transmission oil schedules have been
derived. Scheduled oil analysis is the best way to maintain the balance
between the premature and reactive maintenance.
| Testing Levels |
| Level 1 |
Used
when there is no apparent concern due to contamination or wear. A basic
analysis that a serves as a useful tool to obtain an overall view of
the compartment. |
Level 2
|
When issues arise with the performance of the compartment and the oil.
|
Level 3
|
This
level of testing gives you key performance indicators of the oil and
the compartment. Best suited for warranty purposes. This level of
testing will comply above and beyond any OEM's requirements.
|
| |
| RECOMMENDED TESTING SCHEDULE |
TRANSMISSION OIL |
TESTING LEVELS |
| Analysis |
Method |
Explanation |
Level 1 |
Level 2 |
Level 3 |
|
Moisture Content |
JOAP |
Calibrated from ASTM D6304. This is tested by Fourier Transform Infrared (FTIR) |
YES |
YES |
YES |
|
Wear Metals |
ASTM D5185 |
The analysis of metals by way of ICP |
YES |
YES |
YES |
|
Contamination Metals |
ASTM D5185 |
The analysis of metals by way of ICP |
YES |
YES |
YES |
|
Additive Metals |
ASTM D5185 |
The analysis of metals by way of ICP |
YES |
YES |
YES |
|
Oxidation and Nitration Values |
JOAP |
This is tested by Fourier Transform Infrared (FTIR) |
YES |
YES |
YES |
|
Viscosity @ 40°C OR 100°C |
ASTM D445 |
This will be tested at 40°C for ISO Grades OR 100°C for SAE Graded oils to ensure compliance to specification of Standards. |
YES |
YES |
YES |
| Particle Count |
ASTM D6786 |
The
particle size analysis of all particles including the ISO
Cleanliness Codes (ISO 4406) SAE classes (AS4059) and NAS classes. |
|
YES |
YES |
| Retained Solids |
ASTM D4898 |
The Total Retained solids in oil greater than 0.8μm |
|
|
YES |
| Filtergram |
NIL |
The examination and photograph of suspicious particles. |
|
|
YES |
| |
| ADDITIONAL TESTING |
|
|
|
|
| RUL Analysis |
ASTM D6810 |
The determination of the remaining useful life of the oil. |
|
|
|
|
Which tests to use 
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