The tractors of the Super series Schlüters remained in production with minor changes until the 1990s. The appearance dated back to the early 1960s, but that did not affect the brand’s position as the most respected brand on the market. However, sales figures declined year by year. Compared to sales numbers, there was an astonishing variety of model options and equipment possibilities. For example, more lifting power was often available at an additional cost. A turbine clutch was a standard feature. The front axle limited-slip differential was already standard on the 1500 models in 1974.

In spring 1974, the hydraulically tipping Super-Silence cab was introduced. The gear levers were moved to the side, and the controls were otherwise renewed. In 1978, the cab was widened. In 1981, a 40 km/h gearbox and a new front axle were introduced. At the same time, the 160-horsepower 1500 TVL Special was launched. In 1986, a 50 km/h version became available, which had 24+10 gears. In 1990, the wheelbase was extended.

In 1987, the Super 1500 VL-LS and the corresponding Special model were introduced. These had a 24+12 gearbox equipped with a 2-speed splitter, available in both 40 km/h and 50 km/h versions. The electric power lift was available as an accessory starting from 1988.

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