Grease is widely utilised in machinery to provide essential lubrication during component contact. However, the concern regarding the toxicity linked with mineral-based grease has attracted notable attention. With a thickener content of up to 30%, the properties of the thickener can likewise impact the characteristics of the grease. Organic or green thickeners have gained significant attention from researchers due to their biodegradability and environmentally friendly properties. In this study, a refined, bleached and deodorised (RBD) palm olein grease was formulated utilising a cellulose and chitosan organic thickener and subsequently, its tribological and thermal properties were assessed. The palm grease formulated with organic thickeners exhibited a lower coefficient of friction than lithium-based and food-grade grease. Mass loss analysis of the pin indicated comparable values among all grease samples. The grease containing organic thickener exhibited a shallower wear groove depth on the plate with white particles, resulting from elevated levels of carbon and oxygen attributed to the organic thickener material. Thermal analysis indicated good thermal stability of the organic thickener grease. The finding discovered the potential of organic thickener formulated with RBD palm olein as a sustainable grease.