Silini S, Murjan S. An Experimental Study to Investigate the Extent to Which Internal Combustion Engine Oils Retain Their Properties. Univ Zawia J Eng Sci Technol [Internet]. 2024 month-12 15 [cited 2025 month-06 7];2(2):125-34. Available from: http://journals.zu.edu.ly/index.php/UZJEST/article/view/848