What is the Reaction When Two Greases Aren't Compatible?

Question:

will a certain grease react when mixed with another brand or type of grease and what will happen? thanks!

asked by: Jeff R

Expert Reply:

It is true that some greases do not play well together but this is based on type of grease and not on brand name. When incompatible greases are mixed, the different thickener types with cause the mixture to harden and not release any oil or do the exact opposite and soften too much so all the oil releases. Either can obviously cause bearings to fail quickly. I've attached a chart to assist and have also linked an article to further addess the different kinds of grease.

expert reply by: Jason S