and did you read the article??
The Rover V8 began life as the Buick 215, an all-aluminium engine introduced for the 1961 model year. The compact engine was lightweight, at just 144 kg (318 lb), and capable of high power outputs: the most powerful Buick version of this engine rated 200 hp (149 kW), and the very similar Oldsmobile "Jetfire" turbocharged version made 215 hp (160 kW) (both numbers SAE gross). Based on sales volume and press reports, the engine was a success. Buick produced 376,799 cars with this engine in just three years. A comparable number of Oldsmobile 215 engines were produced. The aluminium engine was relatively expensive to produce, however, and it suffered problems with oil and coolant sealing, as well as with radiator clogging from use of antifreeze incompatible with aluminium. As a result, GM ceased production of the all-aluminium engine after 1963, although Buick retained a similar iron engine[1964-1980], as well as a V6 derivative[1962-2008] prove to have a very long and successful life.