|tumleweed said: (quoted from post at 20:01:09 11/16/12) |
note that kerosene has less oil than diesel fuel.
Well diesel and kerosene are both "fuel oils" so I am not sure what that is supposed to mean. Popular opinion has it that a lighter fuel oil (e.g kerosene) doesn't provide the "lubricity" needed for diesel engines. Here's a little comment from the Lucas diesel injector division on that conventional wisdom:
“The lubrication of the fuel is not directly provided by the viscosity of the fuel, but by other components in the fuel which prevent wear on contacting metal surfaces
The most notable of those "other components" is the sulfur content. Diesel fuel is not an engine lubricant - motor oil does that job - but it does function as a lubricant for the injection system equipment (injectors, pumps, etc). The new low sulfur formulations have to be supplemented with other lubrication additives to make up for the reduction in lubricity. So a higher sulfur content kerosene which is not refined to motor fuel standards is likely a better lubricant than the ultra low sulfur diesel (ULSD) motor fuel that became mandatory for all road use in the USA in 2010. In addition to reduced lubricity ULSD also has a lower energy content than traditional diesel making it very comparable to kerosene in that regard as well. This post was edited by TheOldHokie at 03:48:32 11/17/12 4 times.