The Gas companies try to trick you into thinking buying Premium 90 octane and Super 93 octane is better for mileage and or engine performance. All this is to just get you to buy more expensive fuel.
If your engine manufacturer says use regular 87 octane then use it. Using higher grades will not give you more power or better fuel mileage. That is all a myth.
The octane level is not a power rating of fuel like most people think. The octane level is a rating telling how resistive the fuel is to self igniting when compressed. So 87 octane is 87% resistive to self ignition when compressed and so on.
In higher compression performance engines using higher compression pistons (example 10:1 compression or higher) using regular 87 octane may have the undesired effect of self igniting before the compression stroke reaches TDC and the spark plug ignites the fuel. This is bad as it causes what is called knocking which in time will damage your engine. So these higher compression engines will call for a higher octane fuel to eliminate the pre ignition and prevent knocking.
So the bottom line is save your money and use the fuel the manufacturer recommends. Putting more expensive fuel in is just wasting your money, gives you no benefit and just lines the fuel companies pockets.
If your engine manufacturer says use regular 87 octane then use it. Using higher grades will not give you more power or better fuel mileage. That is all a myth.
The octane level is not a power rating of fuel like most people think. The octane level is a rating telling how resistive the fuel is to self igniting when compressed. So 87 octane is 87% resistive to self ignition when compressed and so on.
In higher compression performance engines using higher compression pistons (example 10:1 compression or higher) using regular 87 octane may have the undesired effect of self igniting before the compression stroke reaches TDC and the spark plug ignites the fuel. This is bad as it causes what is called knocking which in time will damage your engine. So these higher compression engines will call for a higher octane fuel to eliminate the pre ignition and prevent knocking.
So the bottom line is save your money and use the fuel the manufacturer recommends. Putting more expensive fuel in is just wasting your money, gives you no benefit and just lines the fuel companies pockets.