104+ Octane Boost and Injector Cleaner (16 fl oz) 6 pack vs STP Octane Booster: fuel system cleaner, 5.25 fl oz bottle (pack of 12)

Overall winner: STP Octane Booster: fuel system cleaner, 5.25 fl oz bottle (pack of 12)

104+ Octane Boost and Injector Cleaner (16 fl oz) 6 pack

104+ Octane Boost and Injector Cleaner (16 fl oz) 6 pack

104+ • ★ 4.3/5 • Budget

Octane booster that enhances engine performance and cleans fuel injectors, reducing knocks and hesitation. Customers report smoother acceleration and improved gas mileage from using this product

Pros

  • cleans fuel injectors
  • boosts power and gas mileage
  • reduces knocks and hesitation
  • safe for catalytic converters & oxygen sensors

Cons

  • limited to 18 gallons per bottle
  • customer notes may vary with engine type
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STP Octane Booster: fuel system cleaner, 5.25 fl oz bottle (pack of 12)

STP Octane Booster: fuel system cleaner, 5.25 fl oz bottle (pack of 12)

STP • ★ 4.1/5 • Mid-Range

2-in-1 fuel additive that boosts octane and cleans the fuel intake system. Restores power and acceleration with compatibility for cap-less systems. customers note improved fuel mileage and positive value, though some report bottle issues

Pros

  • 2-in-1 octane boost and intake-cleaner
  • compatible with cap-less systems
  • notable fuel mileage improvements (customer reports)

Cons

  • bottle leakage/damage reported by customers
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Head-to-Head

CriteriaWinner
Price 104+
Durability STP
Versatility STP
User Reviews Tie