MB 236.25

Approval MB 236.25 is a technical requirement from Mercedes‑Benz for automatic transmission fluids, developed for the latest electronically controlled gearboxes, including the 7‑speed 7G‑Tronic, 9‑speed 9G‑Tronic and dual‑clutch DCTs, which are installed in both passenger and commercial models (E‑Class, S‑Class, Sprinter, etc.). The fluid must have a high viscosity index, oxidation stability and wear protection across a wide temperature range, providing smooth shifting, minimal friction and long‑term compatibility with seals and friction discs. The specification calls for low viscosity on cold start (V‑grade 75 cSt at 40 °C) and sufficient viscosity at 100 °C (≈ 5.5 cSt), which guarantees rapid filling of hydraulic channels and stable operation under high load. MB 236.25 is compatible with the earlier approval MB 236.10, so the fluid can be used as a replacement in older transmissions that required MB 236.10 without loss of performance characteristics. When choosing XENUM transmission oil that carries this approval, you receive a product that meets Daimler’s official requirements and provides optimal efficiency and durability for your gearbox.