Mineral lubricant for transmissions. This product was specifically developed for mechanical transmissions, synchromesh or unsynchronized gearboxes, differentials / gearboxes, gearboxes and hypoid differentials without limited slip system subjected to jerks, heavy loads and low revs or moderate loads and high revs. Recommended for noisy and / or stressed gearboxes that require compliance with API GL-4 / GL-5 and MIL-L-2105D standards. This product supports heavy loads and reduces transmission noise. Its formulation offers a very high lubricating power to reduce friction and wear. This extreme pressure lubricant offers efficient antiwear protection, and its formula contains anti-corrosion and anti-foaming agents. This high viscosity product (140) at high temperature provides greater resistance of the oil film in extreme operating conditions: heavy loads, shocks, high temperatures. For this reason, the use of MOTUL HD 85W-140 is particularly recommended when the lubricant xxW-90 required by the gearbox manufacturer is not powerful enough to withstand very heavy loads, shocks and / or high temperatures.