Based on the test results of warm drive lubricated by many types of oils

the following conclusions are obtained. （1） the efficiency is the most important parameter reflecting the lubrication capability of warm oil. （2） temperature rising is the indirect reflection . （3） the anti-scuffing capacity of worm pair reflects the extreme pressure （EP） of worm oils. （4） the type of oils is the determinant of application of worm oil. （5） and gives some suggestions of application are given.