A multi-purpose oil (UTTO), used for hydraulic and mechanical transmissions in agricultural and construction machinery subject to heavy loads. A synthetic fluid specially designed for continuous variation transmissions (CVT) in tractors. Its additive system ensures very good lubrication of gears and hydraulic controls. It contains extreme pressure additives which retain the protective film and reduce shearing effects on the gears, even under load. Its anti-wear and anti-corrosion properties ensure the gear protection. Its viscosity and additives enable immersed brakes to work properly without chattering, and also provide excellent oxidation resistance, enabling longer oil change intervals.