An environmental friendly palm-grease has already been formulated from modified RBDPO (Refined
Bleach Deodorized Palm Oil) as base oil and lithium soap as thickener. Such palm-grease is dedicated for general
application and or equipment working in areas where biodegradability is required such as in agriculture, forestry
and coastal marine, recreation areas. The grease was manufactured via 4 steps of processes: saponification in
pressurized reactor, soap dilution by heating, re-crystallization by cooling and homogenization. The result of
lubrication performance tests using 4-ball wear-test showed that the amount of wear on ball specimen was
smaller in test with the palm- grease than the test with mineral (HVI 160S) grease. This ability of the palm-grease
to provide better surface protection or antiwear property was considered as the existence of relatively polar
groups in base oil such as ester -COOC-, hydroxides –OH and oxirane ring (epoxy) -COC-.