2 pack. OEM Part # 11757
- Replaces lead additives for protection of non-hardened valve seats
- Raises octane rating up to 30 points or 3 numbers
- Restores power and fuel economy while cleaning deposits from fuel injectors
- Reduces power loss due to knock-retard in computer-controlled vehicles
- Reduces engine knocking/pinging and stabilizes fuel
- Max-Boost is a racing formula and is not street legal.