In the mid-20th century, farmers in the Western and Midwestern United States demanded more powerful tractors to meet their agricultural needs. Responding to this demand, Oliver introduced a series of high-horsepower machines that set industry standards for over a decade. Starting with the introduction of diesel engines in 1940, Oliver continued to innovate, culminating in the Super 99 GM in 1954 and the El Toro models in the 1960s. These tractors not only revolutionized farming but also established Oliver as a leader in agricultural machinery.

Breaking New Ground with Diesel Innovation

Oliver's journey towards becoming a powerhouse in tractor manufacturing began in the early 1940s when it introduced diesel engines into its lineup. This marked a significant shift from traditional gasoline-powered models, setting the stage for future advancements. By pioneering the use of diesel engines, Oliver positioned itself at the forefront of technological innovation in the agricultural sector.

The company’s initial foray into diesel technology started with the Model 80, which featured a Buda 4DT226 4-cylinder diesel engine. Over the years, Oliver expanded its diesel offerings, introducing more robust engines such as the 6-cylinder Waukesha-Oliver-built 99. The Super 99, launched in 1954, became particularly notable for its unique 3-cylinder, 2-cycle diesel engine developed by General Motors. Despite its smaller cubic inch displacement compared to other models, this engine generated impressive horsepower, making it a standout in the field. Equipped with a supercharger, the Super 99 GM delivered more power strokes than its 6-cylinder counterparts, solidifying Oliver's reputation for cutting-edge engineering.

Pioneering High-Performance Models in the 1960s

Building on the success of the Super 99 GM, Oliver continued to push the boundaries of tractor performance in the following decade. The introduction of the Model 1950 in the 1960s showcased the company's commitment to innovation, featuring unique high-flotation tires designed to enhance traction and reduce soil compaction. Known affectionately as "El Toro" or "The Bull," this model offered unparalleled pulling power and versatility, making it a favorite among farmers.

The Model 1950 was powered by a General Motors 4-cylinder, 2-cycle diesel engine equipped with a turbocharger, delivering an impressive 105 PTO power. To further improve performance, Oliver offered options like mechanical front-wheel assist drive and Goodyear Terra tires. These innovations allowed the tractor to perform tasks previously reserved for crawler tractors, demonstrating Oliver's dedication to meeting the evolving needs of the agricultural community. In 1967, the 1950 was upgraded to the 1950-T, featuring a Waukesha-Oliver-built turbocharged 6-cylinder diesel and an optional 18-speed partial powershift transmission. Even after Oliver's integration into White Farm Equipment in 1969, the legacy of these powerful tractors endured, with the final Oliver-branded tractor, the 147 hp Model 225, being produced in 1976.