TRIBOLOGICAL PERFORMANCE OF ADDITIVES IN COMMERCIAL LUBRICANTS

A detailed effect and relationship of tribological performance regarding friction and
wear of two commercial additives (X and Y) in two types of commercial lubricants
(A and B) has been investigated. Three samples were prepared for each commercial
lubricants; with 10% additive X; 10% additive Y; and without additive. All six
samples were tested using DUCOM Four Ball Tester and the data is collected with
the aid of built-in software called WINDUCOM. The results showed significant
differences in friction and wear when both commercial additives are blended in two
different lubricants. Coefficient of friction increases with presence of additive X and
decreases with presence of additive Y for both commercial lubricants. In contrast,
higher wear damage is observed upon samples with additive Y compared to additive
X. On the other hand, pure commercial lubricants without additional commercial
additives showed stable performance in term of friction’s coefficient and least wear
damage comparing with other samples. These results have significant implications
for commercial additives application in commercial lubricants. As the conclusion,
commercial lubricants are superior without any additional commercial additives for
automotive lubrication.