FORMULATION OF REFINED, BLEACHED AND DEODORISED PALM STEARIN WITH ZINC DIALKYL-DITHIOPHOSPHATE ADDITIVE AND ITS TRIBOLOGICAL PERFORMANCE. JT [Internet]. 2016 Sep. 1 [cited 2024 Jul. 23];78(9-2). Available from: https://journals.utm.my/jurnalteknologi/article/view/9655