ZF TE-ML 03D

ZF TE‑ML 03D is ZF’s technical specification for automatic transmissions, defining the requirements for viscosity, compatibility with friction elements, and chemical stability of the lubricant. It is used in gearboxes that specify this standard, for example in certain Mercedes‑Benz, BMW, Audi models and other brands that use ZF transmissions. When selecting oil, it is important to ensure that it is marked TE‑ML 03D or has an officially approved replacement; otherwise valve operation may be compromised, wear may increase, and transmission efficiency may decrease.