FORD WSS-M2C171-F1

Specification FORD WSS‑M2C171‑F1 is the official requirement of Ford Motor Company for engine oils for heavy‑duty diesel engines used in commercial trucks and off‑road vehicles with Power Stroke 6.7 L and 7.3 L V8. It calls for a synthetic base with high thermal stability, minimal oil consumption, high HTHS‑viscosity, wear and oxidation protection, and stability when operating at temperatures up to 150 °C. The key technical parameter is a low SAPS (sulfated, aromatic and phosphorus compounds) content, which ensures compatibility with after‑treatment systems (DPF) and catalysts, preventing their fouling. The specification covers engines that meet API CJ‑4/CK‑4 and ACEA E7 requirements, and is suitable for both new and retrofitted models that previously used WSS‑M2C171‑F0. Using oils approved to WSS‑M2C171‑F1 guarantees compliance with Ford warranty conditions, extends engine service life and reduces the risk of premature wear under intensive operation.