WSS-M2C934B

The WSS‑M2C934B mark is a Ford specification for automatic transmissions that defines the requirements for transmission fluid (ATF). Fluid that meets this specification provides the required viscosity, high‑temperature stability and wear protection, allowing safe operation of transmissions of models that specify WSS‑M2C934B. When selecting lubricant, be sure it carries this code; otherwise you risk violating Ford’s warranty conditions and reducing the transmission’s service life.