My friend tried that! And thing is working great. He put some 5 percent in a 98 octane fuel and got a great fuel to race.
Another possibility is buying of aero fuel which has 105 octane. It's even cheaper than 95 or 98 (in My country), because there's no high taxes for aeroplane fuel. Only thing is, I have to go there with barrels in a van, no way they would fill the car.
Lucky me, I guess
