>Is there some technical reason why it can't be removed? One reason is that alternative octane boosters can cause icing in carburetors and fuel injection syste

>Is there some technical reason why it can't be removed? One reason is that alternative octane boosters can cause icing in carburetors and fuel injection systems, resulting in engines cutting out at low temperatures. Improvements in combustion chamber design have helped reduce the reliance on high octane fuel, so I expect the situation will gradually improve.