100% Synthetic Motor Oil (Fuel Economy) specially designed for last generation cars, powered by turbo Diesel direct injection or gasoline engines, EURO IV emission regulation compliant, requiring an ACEA C2 Motor oil. ACEA A1/B1, A5/B5, C1 Ford WSS M2C 934 A Mazda Diesel engines with Diesel Particulate Filter (DPF) Engines compliant with EURO IV emission regulation are fitted with sensitive exhaust gas after treatment systems.