“Understanding The Influences Of Different Ethanol-Petrol-Polyisobutylene Ratios To The Performance Of A Single Cylinder S.I. Engine”. International Journal of Mechanical and Sustainability Engineering Technology, vol. 1, no. 1, Nov. 2024, pp. 22-35, https://uniexpertsacademy.com/index.php/IJMSET/article/view/2.