If I open a container of unused grease and see oil on top of the grease, what should I do?  Is it OK to use the grease?

Oil naturally tends to separate from lubricating grease over time in storage.  Storage conditions such as a warm environment can accelerate this separation.  Some greases may have a greater tendency to separate oil that others.  Contact your grease supplier for guidance on whether to mix separated oil back into grease or to pour it off the product, and if you have any questions about the suitability of a grease for service.