Opel Frontera Workshop & Owners Manual | Free Download Opel Frontera. Opel Frontera is a rebadged version of the Isuzu MU Wizard acronym "MU" is short for "Mysterious Utility". Isuzu manufactured several variations to the MU and its derivates for sale in other countries. It was originally built in 1989. Frontera is a long wheel base, five-door vehicle. Opel Frontera Workshop Manuals - Car Manuals Club Guide to repair, maintenance and operation of Opel Frontera, produced since 1999 release, with petrol engines 2.2 (136 hp) and 3.2 (205 hp), as well as with a diesel engine 2, 2 l., (116 hp). Opel Frontera repair manual contains detailed information on repairing all components of the car.