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My Suby loves 98, it roars when it's got that in the tank...
Honest answer... Not sure...
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No. The higher octane can mean that in some cars the ECU can be more aggressive on ignition timing and boost levels. For a runabout shopper, it's a waste of money. For high compression or turbo engines with knock sensors and adaptive ECUs it's worth using
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Brommers
@Well_is_it
Probably been asked a million times but is the premium petrol just marketing?