Are base fluid viscosity and grease consistency related?
In general, for most soap thickened greases, the answer is no. Base fluid viscosity and grease consistency are independent properties of a lubricating grease. The viscosity of the base fluid is determined by the viscosity of the fluids used, as well as the effect of some additives. The consistency of a grease is determined by the type and concentration of the thickener in the product.