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My classic car has a 1968 Ford Escort Kent cross-flow engine and is not driven much. Which would be the best octane fuel to use?


I prefer to run 98 on older vehicles as they tend to suffer more from detonation knock (pre-ignition), often referred to as pinging, than modern vehicles. A higher octane will be better to resist/withstand knocking. Obviously you should always make sure that your vehicle is well maintained and tuned (Timing/Air fuel ratio) for better outcomes.