In particular, 125N fraction has little evaporation loss, good low temperature-cranking viscosity, higher viscosity index, and it is choiceness base oil for top grade and wide span engine oils.

• 特别是125N馏分，蒸发损失小，低温粘度好，粘度指数高，是调制高档、大跨度内燃机油的优良基础油。