The effect of using biodiesel B50 from palm oil on lubricant oil degradation and wear on diesel engine components

Alternative fuels in diesel engines are getting attention due to the current world energy crisis. Biodiesel is a fuel where the main composition from palm oil, it is an alternative fuel may can replace fossil diesel fuels. However, the use of biodiesel has several impacts on the engine if its not maintained. The using biodiesel usually results decrease of lubricating oil viscosity and increases the metal wear rate. This research will present results effect of biodiesel B50 on lubricating oil degradation and metal wear on engine components. The method used is an experiment by testing engines for a long time with the Engine Manufacturer Association (EMA) standard. The use of B50 biodiesel causes significant degradation of lubricating oil than Pertamina Dexlite. The lubricating oil test results that with B50 biodiesel decreased viscosity by 16.17%. Lubricating oil also contains the metallic aluminium 8 ppm, 27% metallic iron, and 1 ppm metallic chromium. Using B50 biodiesel also causes journal bearing worse and significant piston ring gap. In addition, the deposit resulting from the using B50 biodiesel was 30.97% greater in the diesel engine component.