A heat transfer mixture is represented by the formula: 1=Vpg/Vnf+Vw/Vnf+Vpw/Vnf+Vsf/Vnf+Vbs/Vnf+Vac/Vnf+Vci/Vnf. Vnf is a volume of a nanofluid. Vpg is a volume of propylene glycol. Vw is a volume of water. Vpw is a volume of a nanopowder. Vsf is a volume of a surfactant. Vbs is a volume of a base additive. Vac is a volume of an acid additive. Vci is a volume of a corrosive inhibitor.