| abstract |
Extended service lubrication properties as evidenced by a reduced viscosity increase are achieved by a lubricant composition of 25 percent to 75 percent by volume of highly compounded mineral oil in the form of type A transmission fluid with the balance highly refined white mineral oil. During accelerated oxidation testing, a significant range of compositions of the combination of oils has a viscosity increase which is less than that of either of the component oils, evidencing enhanced oxidation stability. |