Article originally published on Noria.com
With greases, one of the most commonly encountered problems is incompatibility between different types of grease made from different thickeners.
Grease compatibility is often confusing to grease users, even though most grease manufacturers produce compatibility charts. This is because the charts from the various manufacturers often disagree with one another on certain thickener-type combinations.
To add to the confusion, there are some grease specifications that are based solely on grease performance without regard to grease composition. If greases of different thickener types (both of which meet the performance requirements of the specification) get mixed in service, dire consequences can result.
(read the entire article, "Avoiding Grease Incompatibility Problems"...)
