Zf 8 Speed Transmission Service 2025 Schedule. Unlike bmw, which says the zf 8hp has a “lifetime fill” and doesn’t have a service interval, the other manufacturers and zf themselves recommend a transmission fluid. 8hps use mopar 8 & 9 speed fluid or zf lifeguard 8 and require the pan to be replaced with the filter.

Zf recommend this being carried out at 60k miles. Do you frequently perform fluid changes?