The Castrol Alphasyn EP gear oil range of high quality synthetic lubricants are based on polyalpha-olefin (PAO) fluids and sulpur / phosphorus Extreme Pressure (EP) additive technology providing outstanding thermal stability and high load;carrying capacity. The Alphasyn EP range has been formulated for use in all types of enclosed gears including heavy loaded / shock-loaded gears and bearings where EP properties are required. They are suitable for use in gearboxes where micropitting resistance is required and for a wide range of applications in extreme environments. The use of a PAO basestock provides inherently high Viscosity Index (VI) and low pour points making these products suitable for use over a wide temperature range. The Alphasyn EP range is fully compatible with nitrile, silicone and fluropolymer seal materials.;Features and Benefits;Full EP performance gives maximum protection of gears against wear and shock loading, including protection against micropitting.;Good thermal and oxidative stability provides reliable operation and extended operating life when compared to mineral oil based products.;Inherently high Viscosity Index makes the product suitable for operations operating over a wide temperature range.;Rapid air release and good performance in the Flender Foam Test prevents foaming and bearing damage.;PAO based lubricant provides good compatibilty with seals, paints and mineral oil based lubricants.;Excellent thermal stability and oxidation resistance.