AN8019 is viscosity index improver on top products in the industry, has excellent shear stability index, less carbon deposition, good filterability, thickening ability, etc. Can be used to reconcile SN/CI/SM/CJ - 4-4 and other high-end products, to meet the 0 w / 30, 40, 0 w / 5 w / 30, 5 w / 4, and other products of low temperature fluidity and high temperature and high shear requirements. Alternative SV261