International Harvester S Fuel Truck

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The International Harvester S-Series is a lineup of medium and heavy-duty trucks that were built by International Harvester. Initially, "S-Series" was used as a label for Light Line trucks from 1956 to 1957, but it was replaced by the A-series in 1958. The term S-series was reintroduced in mid-1977 as a replacement for the Fleetstar. In 1979, other models of the S-Series were introduced to succeed the Loadstar line. Like the Loadstar, the S-Series trucks were straight trucks commonly used for local delivery; semi-tractors or severe-service straight trucks replaced the versions that had previously been the Fleetstar. The S-Series (and its replacement, the 3800) also gained popularity in the school bus industry. The S-Series was the final product line designed from scratch by International Harvester itself; it remained unchanged until the end of the 1980s. Production of a second-generation S-Series ended in 2001.