This article reports the effects of CuO/water based coolant on specific fuel consumption and exhaust emissions of four stroke single cylinder diesel engine. The CuO nanoparticles of 27 nm were used to prepare the nanofluid-based engine coolant. Three different volume concentrations (i. https://www.roneverhart.com/Cocktail-Shaker-and-V-Rod-Bar-Set-Mermaid-Color-Options/