The cases in this MDL involve allegations regarding defendant Dollar General Corp.'s sales and marketing of generic, self-branded motor oil.  Plaintiffs allege that Dollar General used deceptive tactics to market obsolete motor oil to unsuspecting and primarily low-income customers. The class representatives, on behalf of classes from several states, bring causes of actions primarily based on unjust enrichment and violations of state statutory protection schemes. Dollar General summarily denies Plaintiff's allegations, stating the marketing was not deceptive, and it complied with all relevant consumer protection schemes in designing its marketing scheme.