There is a high number of fuel additives available to take advantage of. Perhaps unsurprisingly, all claim to deliver miraculous results! In truth, most try to improve performance by cleaning your car’s fuel system components – mainly injectors, but even the inside of the engine – with special focus on increasing the octane of your chosen fuel. While all respected brands will promise positive impact, don’t go expecting magical results every time. This applies mainly to products specifically marketed as octane boosters. They’re not going to turn regular unleaded into fullon race fuel, no matter how much you might want them to!