Dangote Petroleum Refinery is considering restricting Premium Motor Spirit (PMS) sales to major Nigerian marketers that continue to import petrol, as the refinery raises concerns over product quality, market transparency and the protection of its brand.

The proposed measure could take effect as early as this week, subject to further consultations and any last-minute intervention, according to sources familiar with the refinery’s position.

The potential restriction comes as Nigeria’s downstream petroleum market undergoes a major shift from decades of dependence on imported refined products towards increased domestic production.

At the centre of Dangote Refinery’s concerns is the alleged blending of imported petrol with products purchased from the refinery before the mixture is distributed to consumers.

The refinery is concerned that if imported PMS of uncertain quality is mixed with its products, consumers may be unable to distinguish between fuel supplied directly by Dangote and products subsequently blended or handled by marketers.