A lubricator should always be the last element in an FRL (Filter-Regulator-Lubricator) unit. Howes Lubricator is a manufacturer of oils, fuel additives and multi purpose lubricant. A specific lubricant is filled in the pneumatic lubricator. A sixteen-feed lubricator was driven off the reversing link trunnion. A sixteen-feed lubricator was driven off the expansion link trunnion. The lubricator is driven by a rod from the expansion link in locomotives valve gear. Castrol was founded by C.C.Wakefield in 1899, making lubricants (Wakefield lubricator) for railways. Wakefield patented the Wakefield lubricator for steam engines in the 1890s. One distinctive feature was a displacement lubricator mounted atop the highly polished brass dome. The Wakefield mechanical lubricator was mounted further back on the 502. The displacement lubricator was introduced in the United Kingdom in 1860 by John Ramsbottom. This style of mechanical lubricator was designed & produced by Alex Friedmann KG of Austria. The removal of a remote rail lubricator by Network Rail was also criticised. Two basic lubricator devices are typically employed.