Description

D2 is a refinery abbreviation for Gasoil. It is the second distillate from the crude oil, and can be used without reformers and additives. So, the first engines used D2 as fuel — before petrol cars as we know them today was invented. That is because the engine invented by a German called Diesel, requires no spark plugs. The diesel engine will ignite and combust when the pressure increases so that the heated plug makes it explode. Here we get the name Diesel — since the same principles are used in diesel engines today. However, automotive diesel that you fill has additives that the refinery will add to make the engine more efficient and also easier to start in the winter. Diesel changes flash point in the winter. It also has additives to absorb water that condense. If you use summer diesel in the winter, you will get better mileage, but your fuel pipes may freeze and can also burst, and the wax makes the diesel flow thicker.

The principal difference between GASOIL and D2 is the content of sulphur. Just *0 years ago, the US EPA introduced a limit of 4% sulphur in the GASOIL, whereas Europe and the rest of the world followed later. As in most other cases, when you first have to remove the sulphur, it was soon discovered ways of doing this more efficient. Then it was discovered that the sulphur, as sulphuric acid, could be traded with a good profit — which now is the motivator for extracting as much as possible.

So Low sulphur Gasoil is no longer 4 percent — but below 0.2 percent. Then we have a new, Ultra Low Sulphur at 0.*2% at the most, and the limit here is (a) that mass spectrographs requires extensive calibration to measure below ***0ppm,.