In this paper, the saturation adsorption of machine oil on the exfoliated graphite at different temperatures was studied, and the adsorption effect of machine oil was observed by static adsorption and dynamic filtration. The results show that the saturation adsorption capacity is related to the expansion volume of exfoliated graphite and the oil temperature. The largest adsorption quantity can reach 80.7 g/g. When the oil content is lower than the saturation adsorption, the concentration of remnant oil after static adsorption is related to the expansion volume and original concentration, being generally lower than 50 mg/L. The concentration of remnant oil in water is zero after the first dynamic filtration, whereas the de_adsorption of the oil in the exfoliated graphite can not be realized even after many times of filtration. In conclusion, the exfoliated graphite has a super_adsorption capacity for machine oil, and the floating machine oil can be effectively cleared away by static or dynamic filtration.