This lubricant is specially recommended for noisy or loaded gearboxes such as all mechanical transmission, synchronized or not synchronized gearboxes, gearbox/differential, transfer gearboxes and hypoïd differentials without limited slip system operating under shocks, heavy loads and low revolution speed or moderate loads and high revolution speed. The standards are API GL4 and GL5 / MIL-L-2105D. It is an extreme pressure lubricant for an efficient anti wear protection and is reinforced with molybdenum bisulphide (MoS2) to handle heavy loads. The lubricant stays in 90 grade after KRL 20 hours shear test as requested by SAE J306 Standard, July 1998 update. Very high lubricating power in the oil decreases friction and wear. The 90 grade at hot temperature is to provide outstanding oil film resistance at hot temperature and / or to reduce transmission noise. It is suitable for any type of seal and yellow material used in gearboxes design and has anti-corrosion and anti-foam properties.