API Releases New MTF Standard for Manual Transmission Fluid The American Petroleum Institute (API) has launched the new API MTF certification for manual transmission fluid. Previously, most manual transmission oils adopted API GL‑4 / GL‑5 gear oil standards, without unified requirements for synchronizer compatibility and shifting comfort.

With the upgrading of manual transmission technology, the new MTF standard sets stricter requirements on copper corrosion protection and low-temperature shifting performance. Baoding YIDUN keeps track of the latest API specifications and develops high-performance manual transmission oils, to effectively reduce synchronizer wear and meet the growing demands of passenger and commercial vehicles.