In 1964, Opel introduced its KAD (Kapitän, Admiral, Diplomat) models. The Admiral served as the middle model in this three-car range and was equipped with either a 2.6 litre straight-6 OHV of 100 PS (74 kW; 99 hp) providing a top speed of 158 km/h (98 mph), and, from September 1965, with a 2.8 liter-straight six CIH of 125 PS (92 kW; 123 hp), that made the car reach a top speed of 170 km/h (106 mph).
