OCTANE RATING

Octane rating or octane number is a standard measure of the performance of an engine or aviation fuel. The higher the octane number, the more compression the fuel can withstand before detonating (igniting). In broad terms fuels with a higher octane rating are used in high performance gasoline engines that require higher compression ratios. In contrast, fuels with lower octane numbers (but higher cetane numbers) are ideal for diesel engines, because diesel engines (also referred to as compression-ignition engines) do not compress the fuel but rather compress only air and then inject the fuel into the air heated up by compression. Gasoline engines rely on ignition of air and fuel compressed together as a mixture without ignition, which is then ignited at the end of the compression stroke using spark plugs. Therefore, high compressibility of the fuel matters mainly for gasoline engines.

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.

STANDARDS

Systematic fuel quality improvements in the European Union (EU) have historically preceded – the successful introduction of more stringent tailpipe emission standards. The EU’s fuel quality improvement initiatives have resulted in region-wide supply of both gasoline and diesel fuel (highway and nonroad) with near-zero sulfur content.

The first set of CEN standards in 1993 for automotive fuels were voluntary, but were observed by all fuel suppliers in Europe. Three standards covered automotive fuel quality: EN 590 for diesel, EN 228 for gasoline, and EN 589 for automotive LPG. Mandatory environmental regulations for several fuel properties were first introduced in 1998 , and were revised in 2003 and in 2009 .The applicable fuel properties include lead and sulfur content for gasoline. and EURO III (2000) cetane number, sulfur content, and FAME (Fatty Acid Methy! Esters) el content for diesel. The CEN standards are periodically updated to reflect ch: pecifications, such the mandatory reductions in sulfur content. In addition to regulating fuel quality. the 2009 directive introduced a Low Carbon Fuel Standard to reduce the greenhouse gas (GHG) intensity of energy supplied for road transport.

Note 1: The Octane Enhancer Agents Containing: Metals (LIKE FE, MN,PB,…), Aniline and its derivatives (Like N- Methyl Aniline .N-N- dimity Aniline…), And Chlorine Contain Agents (like Dichloroethane , 1, 2 Dichloropropane,… ) Aren’t Permitted: Any other type of the octant enhancer additives needs the oil products specification comitted approval.

Note 2: The RVP of the cargo should be MAX 60 Kpa dunng Apmil 4th to October 7th. RVP should be MAX 76 for the rest of the year.

Note 3: Dye quantity should be about | Mg/L. (The color of dye shall be green otherwise mentioned by buyer) , Please note dye will be placed on board of vessel and will not be mixed.