MUH ABDILLAH; NURHIDAYANTI; ARIAWAN BAYU WICAKSONO; ISHAK. Investigating the Influence of Alumina Additive Concentrations on specific Fuel Consumption and Exhaust Opacity in Biodiesel Fuel. METAL: Jurnal Sistem Mekanik dan Termal, [S. l.], v. 9, n. 2, p. 117–121, 2025. DOI: 10.25077/metal.9.2.117-121.2025. Disponível em: https://metal.ft.unand.ac.id/index.php/metal/article/view/384. Acesso em: 3 nov. 2026.