When it comes to lubrication in industrial plants, most maintenance people strive for consistency – the use of the same products over a long period of time. This generally allows for smooth operation of equipment. Sometimes, though, conditions dictate a change from one lubricant to another.

In the case of lubricating oils, it is often possible to change the fluid completely; and when that is not possible, the compatibility of the fluids can be relatively easily determined.

In grease-lubricated applications, on the other hand, it is usually impossible to remove all of the old grease from the application when changing products. Grease suppliers typically advise their customers to purge as much of their grease as possible through the grease-dispensing system and application to displace the previously used product.