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Maryann Pisano, Freelance Reporter
2:57 pm CST November 6, 2017
Viscosity Oil Company in west-suburban Willowbrook has been described as “the little engine that could,” due to different ownerships and competition with bigger companies. However, when the company recently celebrated its 125th anniversary on Oct. 17, Winnetka resident and CEO Jeff Hoch couldn’t have been prouder.