[ctcarbonari]

2015 BMW 535i w/ ZF 8HP45 transmission & LifeGuard8 Fluid.

Both times I had my transmission serviced I sent a fluid sample out for OA. Reports are attached.

Sample #1: (Filter/Pan replaced & "dump & fill")
[02/2022] @ 60,245 miles​
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Sample #2: ("Dump & Fill" only)
[01/2024] @ 80,105 miles​
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To the best of my knowledge, the total fluid capacity for the system is 8.8 Liters and I used 4.5 liters as the volume of exchanged oil (a bit conservative, was closer to 5 liters).

For those out there that want to know what a BMW "Lifetime Fluid" looks like @ ~60k miles, then I hope you find the results insightful.
For those out there that like to "geek out" on numbers (as I do), then enjoy.

For anyone out there that can explain to me why the second OA report does not show a 0.15%+ value for Insolubles I'd love to hear the reasoning behind it.
[First report showed 0.3% then roughly half the fluid was changed along with filter. Intuitively, I would expect to see ~0.15+ value on the second report]