Many engine OEMs specify the minimum equilibrium TBN of the used lubric, in addition to other parameters that should be carefully monitored in order to ensure the oil is in satisfactory condition .

为确保润滑油处于满意的状，们应注意观察的其他些参数外，许多发动机都为使用中的润滑油规定了最低均衡总碱值。