Sgo is suzuki genuine oil. The one suzuki uses in its vehicles. sgo sells two oils. Both are 10w40. One is api sm and the other is api sg. For mehran, alto, efi cultus the api sg one should be used. However for cultus carburetor model and new swift 1300cc api sm should be used.
To answer your question, for a cultus efi I would recommend zic m 15w40 over sgo 10w40 api sg because zic m is superior. However you may find zic m with the name of zic x3 now