Genuine SU Dashpot Oil. This is the correct oil for filling the dashpot dampers on all 1945 and Volvos using SU or Zenith Stromberg carburetors. This is for 125ML or around 4.2 Ounces. This is the correct grade for all SU and Zenith Stromberg carburetors including but not limited to Amazon 122, 122S, 1800, 142, 144, PV 444.