MUSAKHI, Fachri; GAMAYEL, Adhes. Effects of Soybean and Olive Oil Additives on the Physical and Frictional Properties of Synthetic 5W/30 Oil. Journal of Global Engineering Research and Science, [S. l.], v. 4, n. 1, p. 27–33, 2025. DOI: 10.56904/j-gers.v4i1.159. Disponível em: https://journal.jgu.ac.id/index.php/jgers/article/view/159. Acesso em: 24 feb. 2026.