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Minimum quantity lubricant (MQL) (nanofluids) is a promising method used in decreasing cutting force and surface roughness and improving tool and productivity. This work deals with the analysis of low-cost SiO2-derived from rice husk ash (SiO2-RHA) nanofluid on the machining of aluminum alloy. L9 Taguchi orthogonal array of nine (9) runs were used to determine the effect of lubrication condition, cutting speed, feed rate, and depth of cut on the turning operation of the aluminum alloy. Analysis of variance (ANOVA) indicates that SiO2-RHA nanofluid has a higher significant effect in lowering the tool wear and cutting force and good surface finish. The SiO2-RHA nanofluid has a contribution of 92.96%, 88.59%, and 93.40% in decreasing the cutting force and tool wear and good surface finish. It was established that the low-cost rice husk waste can be used in the production of nanofluid for the machining (turning operation) of aluminum alloy. [ABSTRACT FROM AUTHOR]