What is the difference between diesel fuel and gasoline?
Diesel fuel differs from gasoline in several ways. Diesel fuel is heavier and "oilier" than gasoline. It evaporates much more slowly because it is composed of larger hydrocarbon molecules, which have higher boiling points, typically 150 °C to 370 °C.
How is diesel fuel classified?
Diesel fuel is usually classified as:
- Seasonal diesel fuel: Type B or Number 2 – the most commonly used diesel fuel.
- Light diesel fuels: Type A or Number 1, for special applications.
Recently, diesel fuel has also been classified by sulphur content: low sulphur and regular sulphur diesel.
What is low sulphur diesel fuel?
Low sulphur diesel fuel (LSD) is fuel that contains less than 500 parts per million
(0.05 wt per cent) sulphur. It is usually used for on-road applications. Since Jan. 1, 1998, all on-road diesel fuel in Canada must be LSD.
What is regular sulphur diesel fuel?
Regular sulphur diesel fuel (RSD) is fuel that contains less than 5,000 parts per million (0.5 wt per cent) sulphur. It is usually used in off-road applications such as farming, forestry and marine.
How can I tell if diesel fuel is low sulphur or regular sulphur?
All on-highway diesel fuel sold in Canada is low sulphur. Since dyed or marked off-road diesel fuel may be regular sulphur or low sulphur, ask your local supplier about the sulphur content of its off-road diesel fuel. In Western Canada, all Petro-Canada diesel fuels sold for off-road use are normally low sulphur.
Does low sulphur diesel fuel have adequate lubricity like regular sulphur diesel fuel?
Yes! All Petro-Canada diesel fuels have satisfactory lubricity as required by the National Standard of Canada for Automotive Low Sulphur Diesel Fuel.
Does Petro-Canada diesel fuel contain a lubricity additive?
All Petro-Canada diesel fuels have suitable lubricity to protect current fuel systems (pumps and injectors). Most of Petro-Canada's diesel fuels have good natural lubricity (even "low sulphur" diesel fuels), especially during the spring, summer and early fall.
Lighter, low cloud point, winter diesel fuels contain a lubricity additive in keeping with the requirements of the National Standard of Canada for Automotive Low Sulphur Diesel Fuel. Petro-Canada recommends that customers avoid routinely adding additional lubricity additive to fuels as high dose rates of some lubricity additives have been found to cause problems such as sticking of plungers, metering valves or fuel injector racks.