Oldsmobile Model Z

The Oldsmobile Model Z was the company's first top-level passenger car produced under the Oldsmobile brand before they became a division of General Motors in 1908. The Model Z was created and engineered after Mr. Olds left the company but before they became a division, the same year the car was introduced. It was the senior model to the mid-level Oldsmobile Model M, and the entry-level, Buick engineered Oldsmobile Model 20. It was upgraded to become the Oldsmobile Limited. It was the first Oldsmobile to introduce a flathead engine with six cylinders, displacing 453 cubic inches and developing 48 horsepower.