The Z4M is oil temp as well.
Very slow moving.
Z4M also have LED warm up indicators on the tach.
IIRC they're base on an algorithm of outside air, water & oil temp.
Alpinweiss '07 M Coupe •DKF Section1•Stomung exhaust•Fabspeed Headers•Autosolutions SSK•APR splitter•Tekarbon headlights•StrongStrut STB•H&R fr ARB•Poly FCAB/RTAB•Volk Racing ZE40•Direzza ZII•Stoptech BBK•Vibra-Tech mtr mounts•