Description
Running premium fuel in an older engine shouldn’t require a second mortgage—or damage your seals. PJ1/VHT Octane Plus safely raises fuel octane on-demand, eliminating detonation and pre-ignition while protecting valve seals that deteriorate with unleaded gasoline. Whether you’re tuning a vintage race car or maximizing performance in a classic build, this fuel additive delivers measurable knock suppression without the need for premium pump gas.
Each bottle combines racing-grade fuel concentrate with a stabilizer formula, ensuring your fuel system stays clean during storage and your engine runs lean and mean when it matters.
- Octane boost: 13–16 points
- Volume: 16 U.S. fl oz.
- Treats: ~16 gallons per bottle
- Format: 1/2-L cans, 6 per case
- Valve seal lubricant: Included
- Material compatibility: Plastic tanks safe
- Fiber reed valves: Compatible
- Storage stability: Built-in stabilizer
- MPN: 13-16









