Front differential
Factory fill · 42,000 mi- Water
- None
- Insolubles
- 0.6% (at limit, due for change)
- Viscosity
- 4.74 cSt @ 100°C
Elevated metals and silicon, which Blackstone attributes to break-in wear and factory assembly sealant from the original fill. They expect it to improve with each change. Fluid replaced with BMW GL-5.
View the full lab report PDF ↗


