Investigation of the Effect of Mileage on the Physical and Chemical Properties on a Sample of Diesel Engine Oils Available in the Libyan Market. م ع ش [انترنت]. 19 نوفمبر، 2025 [وثق 13 ديسمبر، 2025];9(ملحق 36):435-43. موجود في: https://cjos.histr.edu.ly/index.php/journal/article/view/496