Additives containing:<br> <br><br><br>- an overbased mixture of calcium petroleum sulphonates (CAS RN 61789-86-4) and synthetic calcium alkylbenzenesulphonates (CAS RN 68584-23-6 and CAS RN 70024-69-0)  with a total sulphonate content by weight of 15 % or more, but not more than 25 % and<br> <br><br><br>- by weight more than 40 % but not more than 60 % of mineral oils,<br>having a total base number of 280 or more but not more than 320, for use in the manufacture of lubricating oils
Third country duty