International Research Journal of Education and Technology

Nowadays, transportation engines are fueled by biodiesel or a blend of biodiesel and diesel fuel. Contamination of lubricating oil is a common issue induced by leaks or extensive engine usage. Wear and friction of lubrication oil blends with biodiesel derived from used cooking oil, waste cooking oil blend with Pongamia pinnata (Karanja) oil., and biodiesel–diesel blend are examined in this research. As per volume ratio, the biodiesel and biodiesel-diesel mixture with lubricating oil ranges from 5% to 20%, and the biodiesel-diesel mixture with 94% to 75% lubricating oil also ranges accordingly.  According to ASTM D 4172, a pin-on-disc tribotester was utilized for testing. A suitable diameter value was shown.A wear scar on the ball bearing lubricated with the blending mixture. Based on the wear morphology, the tested ball is more shielded by an exhausted surface with black patches. The result found that the biodiesel's low fatty acid content and viscosity greatly reduced the frictional coefficient of the lubricating oil and forestalled wear. Low friction coefficients are desired for mechanical part efficiency. Based on this research, Pongamia pinnata oil was blended with biodiesel produced from waste cooking oil. has higher lubricity and can be used to enhance the performance of automotive engines when blended with petroleum-based lubricants.