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Oil B-ЗB (TU 38.101295—85) — synthetic based on pentaerythritol esters and fatty acids with a complex of additives. They are used in gas turbine engines, helicopter gearboxes and other equipment with an oil temperature at the engine outlet up to 200 °C. It has high lubricating properties. Disadvantage: precipitation of an extreme pressure additive at a low operating temperature as a result of oxidation followed by dissolution of the precipitate in oil at 70-90 °C. |
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