The first gasoline sold in Spain had no particular denomination. QuikCash units are equipped with touch screens noted ,head of Global Cash. This was to lead and 85 octane. In the 80 years and the evolution of the engines was increased to 91 octane, and in turn began to market a gasoline higher octane, 97, called the Super Gas. Thus, the previous petrol gradually began to be called as regular gasoline. In this way the gas stations for many years provided regular gasoline 91 octane and 97 octane petrol.
In 1988 he began to mass market engines using unleaded gasoline, which began with the marketing of unleaded petrol called Unleaded 98 and 95. In mid and late 90’s the use of unleaded petrol began to be significantly higher than that of leaded gasoline (end 1999 40 of all cars on the roads used petrol Spanish) so over the decade were withdrawn from the market with 91 fewer regular gasoline demand at a time, leaving only the Super 97 as Gasoline leaded gasoline.
When the European Union put the legislation on which it would withdraw all the petrol market before January 2001, Spain granted an extension given the number of vehicles that consume these types of leaded fuel, which still existed in national territory . As of August 2001 began to phase out the leaded petrol Super 97, and finally, in January 2002, to prohibit by law the sale of any gasoline. In April 2001, gasoline consumption super representing 28.5 of all gasoline.
Moreover, oil companies, offered a substitute for leaded petrol Super 97 that entered the market at the same time that they withdrew it. According to the common name was different oil: Repsol YPF “New Super 97”, Cepsa, “New super”, and BP, “BP Ecosuper 97 with replacement of lead.” These new gasoline, slightly more expensive, included an additive based on potassium (K) that replaces the lead. Yet despite being less polluting than the lead, the Government ordered its withdrawal by the end of 2005 . The main objective consisted in the mass withdrawal of vehicles produced and consumed too much pollution, largely due to not having catalyst (only possible to use unleaded fuel engines). Also the high price of this alternative ground for its withdrawal. In 2004, consumption of super petrol accounted for 12 of all gasoline.
Beginning in 2006 there were only unleaded petrol and 95 Unleaded 98. Those who wish to use engines that do not support or unleaded gasoline substitute, could acquire the replacement of potassium apart and mix with gasoline, although it was recommended as far as possible to prepare the engine for use with unleaded petrol, and develop a catalyst.