This invention relates to mineral oil based gear oils and transmission fluids which comprise a major amount of a mineral oil having an iodine number of less than 9 and where at least 55% of the saturates are aliphatic, and gear oil or transmission fluid additives. In one embodiment, the invention relates to a gear oil or transmission fluid composition comprising a major amount of lubricant basestock and at least one functional additive wherein a major amount of the lubricant basestock comprises a mineral oil having an iodine number of less than 9 and comprising at least 45% by weight of aliphatic saturates. These gear oils and transmission fluids have good viscosity and oxidation properties.
本发明涉及以矿物油为基础的齿轮油和传动液,其主要成分是
碘值小于 9 且至少 55% 的饱和物为脂肪族的矿物油,以及齿轮油或传动液添加剂。在一个实施方案中,本发明涉及一种齿轮油或变速箱油组合物,该组合物包含大量润滑基质和至少一种功能添加剂,其中大量润滑基质包含
碘值小于 9 的矿物油,并且按重量计至少包含 45% 的脂肪族饱和物。这些齿轮油和传动液具有良好的粘度和氧化特性。