is a basic property describing the softness or hardness
of a grease, i.e., the degree to which a grease
resists deformation under the application of force. Consistency is measured
by means of a cone penetration test. See
penetration (grease). The consistency of a grease depends
on the viscosity of the base oil and the type and proportion of the
thickener. It may also be affected by recent agitation; to take this
phenomenon into consideration, a grease may be subjected to working (a
standard churning process) prior to measuring its penetration value.
Also see NLGI consistency grades.