Luke Oil owners also are principal owners in other companies, including Duke of Oil, Zel's Roast Beef and the $5 Car Wash chain. They employ close to 500 people in Northwest Indiana, said Thomas ...

Luke Oil has been offering cheeseburgers and cheesesteaks at some of its stores, which it plans to roll out to all 60 locations. "You'll see a more intensive focus on our food program," Collins said.

Two of them are of special interest to drivers – a Drive & Shine car wash at 5870 U.S. 6 and a Luke Oil gas station at 6375 Central Ave., where the former Beef Mart building will be razed.

Two new B20 Club fleet members are the village of Mundelein and Wilmette Park District, and two new B20 Club associate members are Luke Oil and Pinkerton Oil.