First of all QX80 needs a diesel, its main competitor the Mercedes GL comes with several powerplants on tap, one of them including an efficient v6 diesel mill.
Turns out Infiniti already has the necessary pieces at home. The first diesel engine ever produced by the Nissan Renault alliance was the V6 DCI engine, it was designed to be a global powerplant.
Figures on the DCI are capabile of reaching 265 hp and 405 lb-fts of twist, more then enough to tow the family boat or shuttle aparky to the vet
Renault.com - V6 dCi
Turns out Infiniti already has the necessary pieces at home. The first diesel engine ever produced by the Nissan Renault alliance was the V6 DCI engine, it was designed to be a global powerplant.
Figures on the DCI are capabile of reaching 265 hp and 405 lb-fts of twist, more then enough to tow the family boat or shuttle aparky to the vet
Renault.com - V6 dCi