Distillation, Characterizations, and Testing of Distillation Products from Waste Lubricant Oil (WLO) using Compression-Ignition Engine

Waste lubricant oil (WLO) is always found in motor vehicle repair shops. Utilizing WLO by distilling it will provide benefits. For this reason, WLO was distilled in this research. Several characterizations were conducted to determine the viscosity, density, low heat value (LHV), and flash point of WLO and distillation products (DP). The DP is less viscous, denser, LHV, and flash point than WLO. The DP was mixed with Pertamina Dex (0, 5, 10, and 15 vol.%) and then filled into the fuel tank for the engine performance test. The present experiment utilized a compression-ignition (CI) engine to measure performance. CI engine speed variations were carried out at 1000, 1500, 2000, and 2500 rpm to see the influence of the mixed fuel on torque, power, specific fuel consumption (SFC), thermal efficiency, and smoke opacity. The increase in CI engine speed leads to an increase in torque, power, thermal efficiency, and smoke opacity, but at the same time, SFC decreases to 2500 rpm. Increasing the DP content in the mixed fuel decreases torque, power, SFC, thermal efficiency, and increased smoke opacity.