Umnyango womlilo we-UL ubhekisela kumnyango womlilo oqhelekileyo waseMelika, owahlukileyo kwezinye iingcango zomlilo. Isici esicacileyo somnyango womlilo oqhelekileyo waseMelika kukuba umnyango womlilo oqhelekileyo waseMelika kufuneka uphumelele uvavanyo lwamanzi omlilo. Umnyango we-UL ongenamlilo unokuhlangabezana neemfuno zokuzinza kokumelana nomlilo, ukunyaniseka kunye nokufakwa kwe-thermal ngaphakathi kwexesha elithile.