More viscous oils were “heavier” and had higher flash and fire points. That first SAE classification – the so-called Specification No 26 – ranked motor oils based on specific gravity, flash and fire points. In fact, it was already in 1911 that the first classification of motor oils was adopted by the newly founded Society of Automotive Engineers (SAE). Since the internal combustion engine is so critically dependent on oil, the need for standardization of motor oil was quickly realized. However, the first true mass-produced automobile, the famous Ford Model T launched in 1908, already used a splash oiling system which is conceptually similar to what we see in modern cars, except that both the engine and the transmission of Model T shared the same oil. Benz Patent Motor Car, which was outed to the public in 1886 and is usually regarded as the first production vehicle powered by a four-stroke internal combustion engine, used a rather alien drip-feed lubrication and a grease cup. This fact was understood already at the very beginning of over the century-long history of the automobile. Motor oil is a vital part of the internal combustion engine.