CHICAGO (CBS) — More than a week after it discovered it had delivered millions of gallons of bad gasoline, customers can search a list of affected stations.

The list is searchable first by state and then by city.

Facing at least two separate class-action lawsuits over contaminated gasoline in Indiana, Illinois, Ohio and Wisconsin, BP said Tuesday that more than twice as much fuel was affected by the contamination than originally reported.

CBS 2’s Brad Edwards reports BP estimated 4.7 million gallons of gasoline were recalled from gas stations in the Chicago area, northwest Indiana, and the Milwaukee area.

That’s more than double the initial estimate of 2.1 million gallons of gas that had to be recalled last week, due to high levels of a polymer residue, which is difficult to burn in automobile engines.

As of Tuesday afternoon, BP had received 7,900 claims from customers needing repairs after receiving some of the tainted gasoline.

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