The Shell Canada Lawsuit was a class action suit filed against Shell Canada Limited on July 18, 2003, on behalf of customers who purchased "Bronze" (regular-grade) gasoline products, to which Shell Canada added an "additive", between March 1, 2001 and April 15, 2002. This additive allegedly caused damage to the fuel supply system of many cars, most commonly of Acura, Chrysler, Dodge, Ford, General Motors, Hyundai and Volvo brands. While Shell Canada estimated that between 100,000 and 200,000 customers bought "Bronze" products during that period, it is unknown how many total vehicles were affected.