The Model U was the first Cummins engine to have moving parts fully enclosed and pressure-lubricated. In 1931, Clessie Cummins drove a Marion truck equipped with a Model U from New York to Los Angeles in only 97 hours.
The Model U was the first Cummins engine to have moving parts fully enclosed and pressure-lubricated. In 1931, Clessie Cummins drove a Marion truck equipped with a Model U from New York to Los Angeles in only 97 hours.
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