LOCOMOTIVE STOU SAE 15W-40 is up-to-date multifunctional STOU (Super Tractor Oil Universal) lubricating oil for agricultural machinery, excavators and construction machinery and is formulated with top-grade solvent refined base oils. It is a special fluid which meets the recommendations of agricultural machinery manufacturers. Locomotive STOU SAE 15W-40 is equal to use in engines, transmissions and hydraulic systems of modern tractors. Top-grade solvent refined base oils and special synthetic based additives ensure trouble-free operation of all units in all seasons.