A method for improving thermo-oxidative stability and elastomer compatibility in an apparatus lubricated with a lubricating oil by using as the lubricating oil a formulated oil including a lubricating oil base stock. The lubricating oil base stock includes a di-alkylated aromatic base stock of the formula: (R1)(R2)(R1) wherein each R1 is the same or different and represents a C10-C30 alkyl group; R2 represents an aromatic moiety. The di-alkylated aromatic base stock includes at least 44 wt % dialkylate product. Thermo-oxidative stability and elastomer compatibility are improved as compared to thermo-oxidative stability and elastomer compatibility achieved using a lubricating oil base stock other than the di-alkylated aromatic base stock. A lubricating oil including the di-alkylated base stock of the above formula, and the di-alkylated aromatic base stock of the above formula.
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机译：一种通过使用包括润滑油基础油的调配油作为润滑油来改善用润滑油润滑的装置中的热氧化稳定性和弹性体相容性的方法。润滑油基础油包括式（R1）（R2）（R1）的二烷基化的芳族基础油，其中每个R1相同或不同并且代表C10-C30烷基; R 2表示芳族部分。二烷基化的芳族基础油包括至少44重量％的二烷基化产物。与使用除二烷基化芳族基础油料以外的润滑油基础油料所获得的热氧化稳定性和弹性体相容性相比，热氧化稳定性和弹性体相容性得到了改善。一种润滑油，包括上式的二烷基化基础油和上式的二烷基化芳族基础油。
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