This will allow you to get to “civilization” without outside help and not ruin the capricious modern engine. But to get such an opportunity, it’s worth (just in case!) to venture out with one of the chemicals, discussed below.
You can increase the octane number of gasoline, for example, with pure alcohol – ethyl or methanol. Its addition to gasoline increases the octane number of the fuel. In order for it to increase by 3 points, the proportion of alcohol in gasoline must be increased to 10%. It is possible to make AI-95 class fuel from 50 liters of AI-92 by pouring 5 liters of alcohol into the tank. Too much, agree!
There is an option to use the substance “from the grandmother’s closet” – naphthalene. Such an impurity in the fuel also increases the octane number. To increase it by 3-5 points, about a kilogram of naphthalene must be dissolved in 40 liters of fuel. It can only be used as a “fire” measure and for a short time, when there are no other alternatives. Because naphthalene contributes to the formation of carbon deposits in the engine and clogs the fuel lines.
However, the best “drugs” available to the motorist to increase the octane number of fuel should be considered ordinary acetone. It, unlike alcohol and naphthalene, can be purchased over-the-counter at any hardware store or roadside hardware store. Adding two liters of acetone to 40 liters of gasoline guarantees a five-point increase in octane. In this case, of course, consumption will increase slightly, but the car will drive by itself, and not “swear” at the burning “tick” on the dashboard.