Oil product light stabilizer

The invention relates to an oil product light stabilizer, and belongs to the technical field of lubricating oil preparation. The oil product light stabilizer is characterized by being prepared from the following raw materials in parts by weight: 3-5 parts of an antioxidant 1010, 5-10 parts of an ultraviolet light absorber; 5-10 parts of an antioxidant 168; and balance of base oil. The preparation method comprises the following steps: mixing the antioxidant 1010 and the base oil according to a weight ratio of 1: 10-15 to obtain a component A; mixing the ultraviolet light absorber and base oil according to a weight ratio of 1: 10-20 to obtain a component B; mixing the antioxidant 168 and the base oil according to a weight ratio of 1: 10-15 to obtain a component C; and blending the component A, the component B and the component C by online blending and filling equipment and adding the blended components into lubricating oil to be renewed, wherein the adding mass of the oil product light stabilizer is 0.1%-0.2% o