Abstract: The needs of having an alternative lubricant to substitute mineral based lubricants caused the limelight to shift on vegetable oil. The decision on having vegetable oil as lubricant base stock is due to its bio-degradability and renewability apart from having good lubricant properties. However, the problem arises when vegetable oil based lubricants are prone to oxidation causing the lubricity and other physical properties to decrease. This study produces the review on addition of secondary antioxidant using zinc and molybdenum substances in order to reduce peroxide developed during propagation process during oxidation. From the review, it is proposed that a further experimental study to be conducted on vegetable oil based lubricants to examine the feasibility of introduction of molybdenum substances in zinc induced bio-lubricants.