COMPARATIVE ANALYSIS OF TEMPERATURE VARIATIONS IN ENGINE OIL OF A 5 HP MOTOYAMA GASOLINE ENGINE UNDER LOAD VARIATIONS USING A DRUM BRAKE
Abstract
This study experimentally analyzes the performance of engine oil based on the rotational speed (RPM) and temperature response on a Motoyama 5 HP gasoline engine with drum brake loading. Three types of oil, namely Shell Advance, Mesran Super, and Federal Ultratec, were tested at three speed levels (Speed 1–Speed 3) and load variations of 0–800 grams. The test results showed that increasing the load caused a decrease in RPM and an increase in temperature in all oils. Shell Advance consistently produced the highest RPM, namely 2364.5–1881.3 RPM at Speed 1 and 2913.4–2612.9 RPM at Speed 3, compared to Mesran Super and Federal Ultratec. From the thermal side, Shell Advance showed a lower temperature increase (ΔT), namely 10.9 °C at Speed 1 and 37.2 °C at Speed 3, while Mesran Super and Federal Ultratec reached ΔT up to 38.6 °C and 39.7 °C. These results show that Shell Advance has the best lubrication stability and thermal resistance, followed by Federal Ultratec and Mesran Super.
