Gel point ( petroleum ) - Wikipedia Gel point ( petroleum ) This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. ( April 2011 ) Gel point is the temperature at which diesel or biodiesel fuel freezes solid and can no longer flow by gravity or be pumped through fuel lines. This phenomenon happens when a fuel reaches a low enough temperature whereby enough wax crystals have formed to prevent any movement in the oil. For # 2 diesel this is usually around 17.5 ° F ( − 8.1 ° C ). For the fuel to become pumpable again, it needs to be brought above the gel point temperature to the Ungel point, which is typically near its pour point. However, most of the waxes will still remain in solid form and the fuel has to be warmed up further until its Remix temperature in order to completely remelt and redissolve the waxes. Anti-gel additives are therefore commonly added to diesel or biodiesels where cold temperature is expected. They act to reduce the formation of wax crystals in the fuel, thereby lowering the pour point and the gel point of the fuel. Anti-gel additives may not necessarily affect the cloud point. See also Pour point Cloud point Cold filter plugging point Petroleum References This chemistry - related article is a stub. You can help Wikipedia by expanding it. Retrieved from `` https://en.wikipedia.org/w/index.php?title=Gel_point_(petroleum)&oldid=784553698 '' Categories : Chemical properties Chemistry stubs Hidden categories : Articles lacking sources from April 2011 All articles lacking sources All stub articles Talk About Wikipedia Add links This page was last edited on 8 June 2017, at 23 : 12 ( UTC ). About Wikipedia

Question: how long does it take for diesel to freeze
Answer: 17.5 °F (−8.1 °C).