B71 2330: The basic, classic specification from Peugeot/Citroën for the smooth operation of traditional manual transmissions.
B71 2340: Modern high fuel economy lubricant specification, exclusively designed for the latest and most demanding manual transmissions of the Peugeot / Citroën / Stellantis group.
B71 2710: The official approval for the green hydraulic fluid (LHM / LHM Plus), absolutely essential for the hydropneumatic suspensions, brakes, and steering systems of Citroën.
Viscosity: It reveals how viscous a lubricant is. It is determined by 2 numbers. The first one with the letter "W" (Winter) refers to how the oil flows when it is cold. The second one refers to how the oil flows when it is hot under operating conditions of the vehicle.
Differentials: Lubricants enhanced with extreme pressure (EP) additives, essential for protecting hypoid gears that are subjected to heavy loads. They ensure smooth power transmission to the wheels without wear and overheating.
Dual Clutch Transmissions (DCT / DSG): Specialized dual-action fluids. They protect the gears from wear, while also functioning as hydraulic fluids for fast gear shifts, simultaneously cooling the sensitive multi-plate clutches to prevent slippage.