Quote:
Originally Posted by tristancliffe
The only stuff I'd touch is TetraBoost (they do octane and TEL additives, plus an ethanol combatant, but I have no experience of the latter).
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I would agree on only using what you know works but I have found that most of them do the same thing regardless of price using the same fuel.
The best way is to try it on a rolling road or engine dyno so you can hear if it's doing any damage, whereas you can't on the track with a helmet on and other cars around you unfortunately.