Abstract In this work, a novel sterically hindered pheno1 derivatives was produced as a lubricant additive. Thermogravimet analysis(TG)indicated that this additive has higher thermal stability than commonly used phenolic antioxidant. The antioxidation property about the product was tested by adopting rotary bomb oxidation test(RBOT),pressurized differential scanning calorimeter(PDSC) and the EP antiwear performance has been investigated by using four-ball machine. The results showed that this additive has good antiwear property and antioxidation property.