A safety and injection system suitable for adding an additive into the fuel available in a fuel chamber characterized by comprising; - at least one portable additive source which has at least one body, at least one additive chamber located in the body and in which the additive suitable to be added into the fuel inside the fuel chamber is stored, at least one memory comprising safety information, at least one fuel inlet connected to the additive chamber and at least one fuel outlet connected to the additive chamber; - at least one fuel inlet valve which Is, at least on one side, connectable to the said fuel chamber, which comprises at least one connector for connecting, at least on the other side, to the fuel inlet and which is suitable for supplying the fuel received from the fuel chamber into the additive chamber through the fuel inlet; - at least one fuel outlet valve which is, at least on one side, connectable to the said fuel chamber, which comprises at least one connector for connecting, at least on the other side, to the fuel outlet and which is suitable for supplying the additive in the additive chamber and the fuel from the fuel inlet into the fuel chamber; - at least one platform which has at least one memory reader/writer that reads the information in the said memory and is capable of writing information on the memory and on which the said portable additive source is placed; and - at least one control unit which is connected with the said memory reader/writer, which comprises a user interface device for receiving at least one control information from the user, and which controls the operation of the safety and injection system based on the data received from the user interface device and memory reader/writer. - at least one portable additive source which has at least one body, at least one additive chamber located in the body and in which the additive suitable to be added into the fuel inside the fuel chamber is stored, at least one memory comprising safety information, at least one fuel inlet connected to the additive chamber and at least one fuel outlet connected to the additive chamber; - at least one fuel inlet valve which Is, at least on one side, connectable to the said fuel chamber, which comprises at least one connector for connecting, at least on the other side, to the fuel inlet and which is suitable for supplying the fuel received from the fuel chamber into the additive chamber through the fuel inlet; - at least one fuel outlet valve which is, at least on one side, connectable to the said fuel chamber, which comprises at least one connector for connecting, at least on the other side, to the fuel outlet and which is suitable for supplying the additive in the additive chamber and the fuel from the fuel inlet into the fuel chamber; - at least one platform which has at least one memory reader/writer that reads the information in the said memory and is capable of writing information on the memory and on which the said portable additive source is placed; and - at least one control unit which is connected with the said memory reader/writer, which comprises a user interface device for receiving at least one control information from the user, and which controls the operation of the safety and injection system based on the data received from the user interface device and memory reader/writer.