PURPOSE: To provide the subject composition which has such excellent performance in, e.g. preventing the seizure under load and reducing the friction as to make it possible to cope with the higher output and higher rotational speed of an engine and which can disperse graphite fluoride well.

CONSTITUTION: This composition contains as the essential constituents 0.01-5wt.% graphite fluoride and 5-50wt.% compound comprising a bis-type alkenylsuccinimide or its derivative, having 20-60 polyamino groups.