Our History

Fueling Workforces, Since 1929

Keller Heartt has been a full-service oil and lubricant provider in the Midwest, for over 80 years. As a privately owned family company, we have grown into one of the leading distributors of bulk oil solutions in the country. With distribution centers in both Chicago and Milwaukee, we now ship everywhere in the continental United States.

Thanks to our long-standing history, we've grown our distributor partnerships over time, securing some of the lowest wholesale prices online for leading brands like Shell, WD-40, American Lubrication, Houghton, Oil Eater and more.

Keller Heartt is also home to TRUEGARD lubricants, one of the industry's most affordable lubricant brands. Our full line-up features bulk sizes of everything from brake cleaner and hydraulic oil to motor oil and propylene glycol, all only a call away.

Facility located in Chicago, IL

Facility located in Oak Creek, WI

Brian McGrath

President/Owner

As President of Keller-Heartt Oil, Brian is responsible for strategic leadership of the organization to ensure its future relevance, credibility, and viability. Accordingly, he establishes organizational objectives and priorities for reviewing and evaluating the progress and work for attainment of objectives and performance goals. Brian has been with Keller-Heartt for 32 years, serving as President for 11.

Flo Zedak

Chief Administrative Officer

Flo has been with Keller-Heartt for 26 years and leads the administrative staff while also handling all financial and human resource activities. Beyond her extensive experience in daily operational duties, Flo brings knowledge and leadership to create greater customer value through her department to add to a positive culture throughout the company.

Terry McGrath

Chief Purchasing Officer

As Chief Purchasing Officer, Terry McGrath oversees all aspects of the organization's goods and services purchasing function. Terry is responsible for planning and directing materials and supply to reduce costs and improve quality. Terry has been with Keller-Heartt for 30 years, serving as Purchasing Officer for 15.

Mark Szczurek

Executive Sales Manager

Mark comes from an extensive lubricants background, being with Shell Oil for nearly 9 years. Mark is responsible for leading Keller-Heartt's sales force. He ensures consistent, profitable, growth in sales revenues through positive planning, deployment and management of sales personnel. Accordingly, he identifies objectives, strategies and action plans to improve short- and long-term sales and earnings.