Study the Effect of Friendly Environmental Materials Addition on Viscosity Index and Pour Point of Engine Diesel Lubricating Oil. Al-Nahrain Journal of Science, [S. l.], v. 21, n. 3, p. 105–111, 2018. Disponível em: https://anjs.edu.iq/index.php/anjs/article/view/1749.. Acesso em: 2 may. 2024.