Specialized experts warned about the risks of refueling a car with high-octane grades of A-98 and AI-100 gasoline. Marketers say that this type of fuel will provide increased performance, economy and prevent engine coking.
Experts of the portal “AvtoVzglyad” think otherwise. In general, according to experts, when refueling, you must follow the manufacturer's recommendations. They, as a rule, are violated either by not very experienced motorists, or by drivers who require extreme. Many people mistakenly believe that if you refuel the old AI-100 model, it will significantly increase the return, but in reality you can face problems that are not mentioned in the brochures. It should be noted that the higher the octane number, the higher its compression resistance. From this it follows that as soon as the candle gives a spark, everything can ignite. If the engine is designed for AI-95, and it is constantly refueled with AI-92, the fuel will not ignite, but it can explode, destroying the cylinder walls and pistons. This experiment, if carried out regularly, will lead to increased wear and early engine failure. AI-100 gasoline will protect against such a development of events. However, high-octane gasoline burns more slowly, while burning all valves and rubber seals. The temperature of the power unit will be above normal, which means that the cooling system will have to work hard. Detonation can hardly be expected in this case, but everything will end with a major overhaul of the engine and replacement of the main part of its components.
If you pour high-octane gasoline into a used foreign car, the performance of the unit will not increase, but the valves, as well as all oil seals and gaskets, will burn out. In addition, problems will arise with the cooling system. Experts recommend using the AI-100 only for refueling vehicles with highly accelerated units. These currently boast the Nissan GT-R, Subaru WRX STI and Audi RS6. Drivers of other vehicles are advised by specialized experts not to violate the manufacturers' recommendations, and if they suggest using a certain brand of fuel, then fill it into the tank.