There has been no much difference in usage pattern of EP/antiwear additive chemistry of additives in greases and other lubricants like cutting fluids and gear oils. These additives perform very well in some greases but not able to perform up to desired level in other applications. Due to high active sulfur content, they need supplementary additive with them for non-ferrous metal corrosion protection. Additive chemistry plays a vital role in performance of greases, none the less base fluid and thickener play an important role. As the greases is worked and churned in bearing, the grease is required to liberate some oil to lubricate race way surfaces. Some of the additives also released with oil but not able to go back in grease’s jell structure. As a result depletion of additive takes place gradually and performance level of grease decrease. Thus the life of grease and bearings reduced. In view of this, the usage of solid additives with nano particle size is increasing in high performance greases in recent times. The biggest advantage of solid additives with nano particle size in greases is it provides the structure to grease by working as the thickener/fillers and support the development of lubricating film on friction contact surfaces. Thus reduces the chances of depletion of additives with oil due to break down of grease structure due to high temperature and high load during operation. Analyzing the properties of 2Mercaptobenzothiazole, we have attempted to study the performance of this additive in lithium complex grease. We have evaluated this additive in wide perspective of tribological behaviour in different combination with antiwear additives. Though the primary use of 2Mercaptobenzothiazole is vulcanization accelerator for rubber, fungicide, copper corrosion inhibitors in various lubricants and coolants at a very low treat level. 2Mercaptobenzothiazole has very high sulfur content hence it can also be used as an excellent EP additive. Due to presence of two nitrogen atom in MBT, it is slightly basic in nature which helps to neutralize the acidic components formed in application thus increases the life of grease. Additionally, due to solid nature it can work as a filler in greases and subsequently increases the yield of greases.