This article investigates the emission characteristics of an engine operated in dual-fuel mode utilizing quinine nut oil and producer gas generated from coconut shell. The results obtained were analyzed with data of other researchers, and it is depicted that both nitrogen oxide and smoke emission showed a reducing graph while carbon monoxide, carbon dioxide, and hydrocarbon increased for dual-fuel mode in comparison to the single operating condition for all the prepared test fuels under different loading conditions. Hence, coconut shell as producer gas with quinine oil can together be utilized in reducing hazardous emission coming out of modern engines as an alternative fuel without much engine modification and concerns.