Johnsen's 4688-12PK Octane Booster - 12 oz., (Pack of 12);
Johnsen's 4688-12PK Octane Booster - 12 oz., (Pack of 12)

The STP Octane Booster boosts octane and helps stop knock and ping, restores horsepower, cleans the fuel intake system, prevents hard starting and stops engine run-on.

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The STP Octane Booster boosts octane and helps stop knock and ping, restores horsepower, cleans the fuel intake system, prevents hard starting and stops engine run-on.

  • Boosts octane
  • Restores horsepower
  • Cleans the fuel intake system
  • Boosts octane and helps stop knock and ping
  • Dual action formula
  • Helps improve sluggish performance, reduce hesitation, smooth rough idle and eliminate stalling
  • Boosts octane
  • Restores horsepower
  • Cleans the fuel intake system
  • Boosts octane and helps stop knock and ping
  • Dual action formula
  • Helps improve sluggish performance, reduce hesitation, smooth rough idle and eliminate stalling

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