What makes 'low-cost' 'low-cost'
An important element in determining the prices of a gas station is the additives they use in their fuels. According to the European directive, all companies that sell fuel must meet quality standards to ensure that their products are stable over time.
The cheapest ones meet the minimum, while the premium variants contain compounds that the brands keep secret, both in terms of composition and ratio.
The cetane number distinguishes one diesel from another and indicates the time that elapses between the injection of fuel and the start of combustion. This number must be greater than 46. In Spain, however, all A diesels exceed 51 and therefore any diesel is suitable for all cars.
The higher the cetane number index, the longer the compression ignition will be delayed, which will result in a cleaner and more efficient combustion, leaving less residue in our engine.