THE EFFECT OF MOLYBDENUM DISULFIDE NANOPARTICLES AND SODIUM DODECYL SULFATE ADDITION TOWARDS WEAR PROTECTION PROPERTIES FROM THE SAE 10W-30 STANDARD LUBRICANTS

The use of modified lubricants on the engine could lead to the efficiency of energy use. This research aimed to investigate the effect of molybdenum disulfide (MoS2) nanoparticles and Sodium Dodecyl Sulfate (SDS) addition to the SAE-10W-30 standard lubricant that is formulated from three basic oils (HVI-60, HVI-95, and Yubase-8). The preparation of SAE-10W-30 standard lubricants was performed by mixing the three basic lubricants in a beaker glass, followed by a stirring process with a speed of 330 rpm at 50C for 60 minutes. MoS2 nanoparticles and SDS were added to the mixture with varying concentrations of optimum concentrations of 0.1% wt and 0.2% wt respectively. The four-ball test indicated a 16 % decrease in scar diameter in SAE-10W-30 standard lubricants that had been given MoS2 and SDS nanoparticles. Moreover, the results of the high-frequency reciprocating rig (HFRR) test showed a decrease in wear scar of around 42.7%, a decrease in the coefficient of friction of 1.61%, but an increase in film coating to 100%. Based on these results, it can be concluded that MoS2 nanoparticles and SDS increase the engine wear protection in SAE-10W-30 standard mixture lubricants.