GB/T 6538-2022 specifies a method for determining the apparent viscosity of engine oils at high shear rates and low temperatures (e.g., -5°C to -35°C) using a cold-cranking simulator (CCS). This method simulates the operating conditions within bearing clearances during cold engine starts. The measured CCS viscosity is a critical indicator for evaluating an oil's low-temperature starting performance and its ability to prevent engine wear, and it is directly linked to the SAE engine oil viscosity grade.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | E34 | ICS | 75.100 |
| Release Date | 2022-10-12 00:00:00 | Implementation Date | 2022-10-12 00:00:00 |