The spelling of "train oil" may seem odd, but it has its roots in history. Also known as "whale oil," it was a popular fuel for lamps and lubricants in the 19th century. The word comes from the Dutch "traan" meaning "tear" or "drop" as the oil was obtained by boiling blubber which melted into droplets. The phonetic transcription of "train oil" is /treɪn ɔɪl/, with the "ai" representing the long A sound, and the "oi" representing the diphthong OY sound.
Train oil refers to a type of oil traditionally used as lubricant or fuel in steam locomotives. Also known as locomotive oil or steam engine oil, train oil is specifically designed to withstand the high temperatures and heavy wear associated with steam-powered trains.
Typically, train oil is made from a combination of petroleum-based fluids, such as mineral oil or refined crude oil, and additives that enhance its lubricating properties. These additives help to reduce friction and protect the moving parts within the locomotive's engine, such as pistons, bearings, and crankshafts. By providing a smooth and protective layer between these components, train oil minimizes wear and extends the lifespan of the machinery.
In addition to its lubricating functions, train oil can also serve as a fuel source for steam locomotives. When burned, it releases energy in the form of heat, which is then used to produce the steam required to power the train. The high energy density of train oil makes it an efficient source of fuel for steam engines. However, with the decline of steam locomotives and the advent of diesel and electric trains, the use of train oil has become less common and has been largely replaced by other fuels and lubricants in the railway industry.
An oil obtained from the fat or blubber of the whale.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "train oil" comes from the Old English term "trēgian", which means "to drag or draw". It originally referred to oil extracted from fish, particularly seals, and was used in the medieval period as fuel for lamps. The term "train" was derived from the act of dragging seals ashore in order to extract the oil from their blubber. Over time, the term "train oil" evolved to generally describe oil extracted from fish, regardless of the method used.