Pratowo, B., Kunarto, K. and Hantoro, W. 2024. Modification of Distillation Engines Using Used Oil into Diesel and Premium Fuel Using Circular Condensation. Jurnal Indonesia Sosial Teknologi. 5, 7 (Aug. 2024), 3598–3607. DOI:https://doi.org/10.59141/jist.v5i7.1247.