Experimental investigation of tribological characteristics and emissions with nonedible sunflower oil as a biolubricant.

Plant (vegetable) oil has been evaluated as a substitute for mineral oil-based lubricants because of its natural and environmentally friendly characteristics. Availability of vegetable oil makes it a renewable source of bio-oils. Additionally, vegetable oil-based lubricants have shown potential for reducing hydrocarbon and carbon dioxide (CO) emissions when utilized in internal combustion (IC) engines and industrial operations.