Injini dzeGTL Cummins hadzina mbiri chete nekuvimbika kwekutanga-kirasi, kusimba uye hupfumi hwemafuta, asi zvakare dzinosangana nekuwedzera kuomesera kuburitswa kwemotokari (US EPA 2010, Euro 4 uye 5), kunze-mumugwagwa mikuru yemidziyo inoburitsa (Tier 4 interim/Stage) IIIB) uye shipboard emissions (IMO IMO zviyero) vanga vari mutungamiri weindasitiri mumakwikwi anotyisa.