Hydraulic Fluids work on straight hydraulic systems, such as: Backhoes, hydraulic jacks, hydraulic vane & gear pumps, and hydraulic reservoirs. Tractor Fluids function as: a transmission fluid, wet brake fluid, power steering fluid, and, hydraulic oil for the power take off. For Additional Information CONTACT: Warren Unilube, Inc.
Sep 08, 2017 · Oil viscosity changes with temperature. The hotter the temperature, the thinner the oil becomes and the colder the oil, the thicker. So, for example, a hydraulic system operating in a cold climate like Tasmania would run better with a lower viscosity grade of 32. The oil would be thinner and have less resistance to flow on start-up.