Jeenkour P, Meephua A, Tabtimthong S. Study on Viscosity and Acid of Lubricant-Water Contamination using Nano-Graphite Powder and Sunflower Oil as Additives. Eng. & Technol. Horiz. [Internet]. 2022 Sep. 29 [cited 2024 May 5];39(3):57-71. Available from: https://ph01.tci-thaijo.org/index.php/lej/article/view/247952