The continuous growth in population, industry and the automobile sector, combined with the lack of incentives for sustainable consumption, increase the consumption of lubricating oils exponentially. In this sense, the National Solid Waste Policy (PNRS), with Law No. 12,305/2010, instituted the mandatory proper management of lubricating oils and waste resulting from the exchange activity. Resolution No. 362/2005 of the National Environmental Council (CONAMA), in turn, states that oils should be recycled by the re-refining process. In addition, the law determines shared responsibility among all the links involved in the logistics chain for this product. This research sought to analyze the collection of automotive lubricant oil in Teresina, Piauí, Brazil and its compliance with legislation. For this, the city's waste generating points were identified, as well as the monitoring of all stages of the reverse cycle of lubricating oil. The results obtained show that the reverse logistics of used or contaminated lubricating oil (OLUC – óleo lubrificante usado ou contaminado) generated in the city does not occur effectively, requiring greater supervision of the establishments that perform the oil change, environmental education for professionals involved in the reverse logistics cycle of waste oil and incentives to open a company that collects and re-refines used oil in the Northeast, which would make the reverse logistics cycle of this product much less expensive. The main practical contribution of this study refers to the observance of the lack of awareness about the dangers of incorrect disposal of OLUC, the difficulty of companies in carrying out the proper packaging disposal in Teresina, the need for specialized companies to carry out the collection of OLUC in the city, and the inspection by environmental agencies that could make them aware. The main limitations of the work were the great difficulty in establishing a list of waste-generating points in the city of Teresina, since the agencies consulted have outdated lists with inaccurate information on the points that collect OLUC; and the conducting of the interviews via telephone call with the collector companies, since re-refining is carried out in the city of Feira de Santana, Bahia. Its originality is ratified by other works, because it is, until its publication, the first and only study developed on reverse logistics of post-consumption lubricant oil in Teresina.