An examination of viscosity of MWCNT/ZnO-SAE40 hybrid nano-lubricants has been done.
Experiments have been done under various temperatures and solid volume fractions.
The results revealed that the nano-lubricant behaves as Newtonian fluid.
The maximum enhancement of viscosity of the nano-lubricant was 33.3%.
A new correlation has been proposed to estimate the viscosity of MWCNT/ZnO-SAE40 hybrid nanofluid.