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Forum Fuel and economy Fuel specifications

By montybob | AA Member | 2 Posts | 12 May 2022 at 12:24am

I am looking at buying my first new car. The manufacturer recommends 95 octane fuel. I know you can run a 91 on 95, but what about the other way around. Is it better for the car to to stick with the recommended fuel, or can I use the lower octane, with or without an additive?