Distillate Fuel contamination would make the oil viscosity decrease while Residual Fuel contamination would either make the oil viscosity increase or decrease depending on the viscosity of the fuel.
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美
- 馏出燃油的污染可使润滑油粘度下降,而剩余燃油的污染可使润滑油粘度上升或下降,这主要取决于燃油本身的粘度。