theacademictimes Researchers at the Kwame Nkrumah University of Science and Technology (KNUST) have developed a high-performance engine lubricant from Jatropha curcas oil, demonstrating the potential of a renewable plant-based material as an alternative or supplement to petroleum-derived lubricants. KNUST reported the research on 4 August 2026 through its University Relations Office.
The researchers converted Jatropha oil into a bio-lubricant through a series of chemical processes, including esterification, transesterification and epoxidation, before blending the modified oil with performance-enhancing additives. Laboratory testing used industry-standard ASTM and ISO methods to assess its physical and chemical properties.
The resulting lubricant recorded a viscosity index of 227, indicating that its viscosity remained relatively stable across varying operating temperatures. It also recorded a flash point of 230°C and a pour point of -20°C, alongside low free fatty acid content and an acid value below recommended limits.
The research moved beyond laboratory testing into an extended engine trial. The bio-lubricant was used in a motorcycle engine for 12,000 kilometres to assess its performance under operating conditions.
During the test, the viscosity index declined from 227 to 192.9, but KNUST reported that the lubricant maintained acceptable viscosity and thermal stability throughout the testing period. Engine wear was also examined using X-ray fluorescence (XRF) analysis, with measured metal wear particles remaining within original equipment manufacturer guideline ranges.
The researchers concluded that Jatropha curcas oil can serve as a renewable base stock for automotive lubricants. The finding is significant for research into plant-based industrial materials and the development of alternatives to petroleum-based products.
According to KNUST, the research demonstrates the potential for plant-derived materials to meet performance requirements associated with modern engine lubrication while potentially reducing dependence on petroleum-derived inputs.
Research and Industrial ApplicationThis is a title
The study presents an opportunity for further research into the commercial production, cost, scalability, environmental performance and long-term engine compatibility of Jatropha-based lubricants. Further industrial evaluation would be necessary to establish how the formulation performs across different engine types, operating conditions and extended service intervals.
For Ghana, the research also illustrates how university-based scientific work can explore locally available biological resources for value-added industrial applications. The development connects research in renewable materials, chemical engineering and automotive technology with the broader search for sustainable alternatives to petroleum-based products.
Source: KNUST University Relations Office, KNUST Study Finds Jatropha Oil Can Be Turned into High-Performance Engine Lubricant, published 4 August 2026.
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