Torco s Unleaded Accelerator is not just a fuel additive, it is race fuel concentrate. While possessing many of the same additives as full race fuel, Unleaded Accelerator uses a blend of components that will transform regular fuel from the pump to closely resemble race fuel. It also reduces the end burn temperature which enables fuel to burn more effectively thus provided better combustion and ultimately more power from the engine.When mixed at a ratio of 40:1 with regular unleaded pump fuel, an efficient octane rating of 102 is achievable. However you can also mix it at a ratio of 20:1 which will provide a much higher rating of 105. Supplied as a 945ml bottle.Safe to use with catalytic converters and oxygen sensors.***Not for delivery outside UK***