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Don’t waste your money on “snake oil”.you’re already using a top quality high octane fuel,whats the point of adding more?I have never seen a test that found ANY that actually worked.
 

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If you want the best of the best (well according to Esso anyway :ROFLMAO: ) use their Synergy Brand as it's supposed to have zero Ethanol in it, (apart from certain areas of the country) even though it's marked E5 on the pump.
 

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No, it would be a waste of money but shoving in a bottle of redex to help shift any stubborn deposits does help an older/high mileage engine. I would maybe shove 1 bottle in anyway if you think it feels a bit sluggish [probably another issue though] and then keep using v-power and it should keep it in top shape with the extra cleaning additives.
 
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