degroate petroleum was established in 1976 as an amoco, serving the fuel and lubricant needs of industry, transportation, and agriculture. located off interstate 80 at illinois route 30 in new lenox, illinois, degroate petroleum created jobs and- stimulated financial growth over the last two decades. in addition, other nearby communities of joliet, plainfield, channahon, mokena, manhattan, monee, and kankakee, to name a few, have benefited from this aggressive and growing oil company.