Profile: Amsoil Inc. specializes in the formulation of synthetic lubricating oils for all types of engine and gear applications, including those for specialized vehicles & severe operating conditions. We are ISO 9001:2008 certified. Our products include diesel oil, motor oil, gear lubes, transmission fluids, compressor oil and hydraulic oil. Our synthetic tractor hydraulic/transmission oil, SAE 5W-30 is formulated for a combination of transmission, hydraulic systems, final drives, power take-off systems and wet brakes. Our synthetic anti-wear hydraulic oil, ISO 15 protects hard-working hydraulic systems from the stress of high-pressure, high-load and heavy-duty operations. It remains in a fluid state in cold temperatures.