Diesel
In 2016 as part of the UN Environmental Programme, Nigeria, Benin, Togo, Ghana, and Cote d’Ivoire reached an agreement to bar imported diesel from European countries.
The “dirty diesel” is documented as containing extremely high sulfur levels – sometimes hundreds of times higher than what is permitted in Europe.
The five West-African countries also promised to upgrade their refineries, in an effort to increase the sale of local diesel, as reported by The Guardian.