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Winter diesel fuel (also known as winter diesel, alpine diesel, or winterised diesel) refers to diesel fuel enhanced to prevent it from gelling in cold weather conditions. In general it is achieved by treatment with additives that change the low temperature characteristics of the fuel.
Current additives allow a CFPP of −20 °C to be based on diesel fuel with a CloudPoint of −7 °C. The trustworthiness of the EN 590 have been criticized as being too low for modern diesel motors – the German ADAC has run a test series on customary winter diesel in a cold chamber. All diesel brands did exceed the legal minimum by 3 to 11 ...
Anti-gel additives are sometimes added to petroleum products where cold temperature may affect their use. The additives act to reduce the formation of wax crystals in the product, thereby lowering the pour point and the gel point of the fuel. Anti-gel additives may not necessarily affect the cloud point.
Fuel additives in general Ether and other flammable hydrocarbons have been used extensively as starting fluid for many difficult-to-start engines, especially diesel engines; Nitromethane, or "nitro", is a high-performance racing fuel; Acetone is a vaporization additive, mainly used with methanol racing fuel
The cetane number is a key property of diesel fuel, as it measures its aptitude to self-ignite in the combustion chamber. [8] The auto ignition temperature of diesel fuel is around 220 °C (428 °F) at atmospheric pressure. Cetane improver additives are used to decrease this temperature and lead to quicker combustion, by increasing the cetane ...
Kerosene is sometimes used as an additive in diesel fuel to prevent gelling or waxing in cold temperatures. [54] Ultra-low sulfur kerosene is a custom-blended fuel used by the New York City Transit Authority to power its bus fleet.
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