Lube-Tech Figure 2 Figure 5


PUBLISHED BY LUBE: THE EUROPEAN LUBRICANTS INDUSTRY MAGAZINE


No.132 page 4


Summary and conclusions Commercially available biobased and conventional greases were tested to determine the impact of their mixing on their performance. While some past studies have used un-additised greases for compatibility testing, this study used fully formulated greases. The interaction of additives used in two different greases especially at higher temperatures could play a major role in compatibility of the grease.


Figure 3


The diversity of additives used in different greases on the market and how they may interact with each other when comingled together is an uncontrolled variable.


So, until the effect of different additives on each other can be studied separately, the compatibility of the greases selected here may be considered as a reference for screening purposes.


Figure 4


Biobased Grease 3, Biobased Al Complex, was either borderline compatible or incompatible with both mineral oil-based greases. This could be because it is intended for a different purpose, being the only food grade of the selected greases, and uses a different thickener, aluminum vs. lithium and polyurea.


28 LUBE MAGAZINE NO.161 FEBRUARY 2021


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