What kind of advice is not given regarding gasoline. Here’s another one: It’s harmful to the engine when pouring fuel with a non-recommended octane rating.
On the gas tank door, one gasoline is marked as recommended and another in parentheses. So: the one in brackets can only be filled if the main fuel was not available at the gas station. It is not suitable for permanent use.
Expert opinion
Mikhail Kolodochkincolumnist “Behind the wheel”:
– Gasoline, whose octane number exceeds the octane number recommended by the car manufacturer, is only harmful to the wallet of the car owner. However, the engine will not be harmed by it, but neither will it benefit. It makes sense to pour it in extreme heat – then the probability of an explosion is greatly reduced.
But using low octane gasoline can cause problems. Short-term use of the 92nd petrol instead of the 95th will do no harm, if you avoid sharp accelerations and other overloads while driving. After all, when designing an engine, although it is calculated on a certain octane number, it always has a small margin in case of deviation.
But if you’re constantly topping up low-octane fuel, no constructive margin will suffice. In addition, if one day instead of the 92nd gasoline, the 90th is splashed: the engine may not survive a deviation from the norm of 5 units.
***
So if it’s very hot outside, using 98th high-octane gasoline in a car designed for 95e is warranted. Otherwise it is wasted money. But you can only occasionally use gasoline with an octane number below the recommended octane number, the engine will not thank you for this.
The specialist told everything in more detail in the material “5 common misconceptions about gasoline (there are dangerous!)”.
A picture: Depositphotos and drive