BP says recalled gasoline went to Chicago's south suburbs and Milwaukee and may involve grades other that regular.
BP spokesman Scott Dean says some of the recalled fuel was sent to Milwaukee and sold at retailers there Monday and Tuesday before sales were halted.
The company announced the recall Monday, saying it was limited to regular gasoline sold at retailers in northwestern Indiana. Dean now says some of the tankers delivering the fuel there also crossed the state line into Illinois. Dean says it also might involve premium and mid-grade gasoline.
He says BP has heard from more than 5,000 customers whose cars have required repairs because of the gasoline with a high level of a polymeric residue.
Customers can send BP emails at bpconsum(at)bp.com, call 1-800-333-3991, or visit http://www.bpresponse.com.