The enhanced thermal properties are the prominent objective behind the usage of nanofluids. Hence, it is necessary to study the base/nanofluid physical properties at various conditions. This article projects the experimental results of thermal conductivity and viscosity of two different nanofluids. The ratio was considered as 60:40 and 40:40 by volume in water and ethylene glycol, respectively. The preparation of nanofluids was started by scattering SiO2 nanoparticles in EG and “water” (W) blended in “60:40” (60EGW) and “40:60” (40EGW) ratio by volume. The regression analysis was conducted with available data, and correlations were formulated for thermal properties. The nanofluids were used in evaluating “viscosity” and “thermal conductivity” experimentally. From the results, the SiO2 particles have achieved an enhancement of 34% and 32% in thermal conductivity with the two base fluids. Similarly, an enhancement of 102% and 62% was reported in viscosity. Hence, it can be observed that SiO2 nanofluids in 40EGW nanofluid are better heat transfer fluids when compared with SiO2 in 60EGW nanofluid.