May 30, 2026

STP 2-in-1 Octane Booster & Jet-Fuel Formula (5.25 oz. Bottle)

$24.99

The STP 2-in-1 Octane Booster (78574) is a versatile fuel treatment engineered to restore lost horsepower and eliminate engine knocking and pinging. Formulated with MMT and synthetic technology, this 5.25 oz. bottle acts as a powerful octane enhancer and a high-performance detergent. It effectively cleans fuel injectors and intake valves, ensuring a smoother idle and more responsive acceleration. This “Jet-Fuel” carrier formula is safe for all gasoline engines, including those equipped with turbochargers, superchargers, and catalytic converters.

SKU: jsdf2585 Category:

Full Product Description

STP’s 2-in-1 Formula addresses the common issue of “Octane Requirement Increase” (ORI). Over time, carbon deposits in the combustion chamber can cause an engine to “crave” higher octane fuel than the manufacturer originally recommended, leading to audible knocking or “pinging” during acceleration. This additive raises the octane rating of your gasoline, allowing the fuel to burn more efficiently and preventing premature ignition.

The “Jet-Fuel” component serves as a high-quality carrier for the active cleaning ingredients, allowing them to penetrate and dissolve stubborn gum and varnish throughout the fuel system. By keeping the intake system clean, this booster helps maintain optimum fuel economy and prevents the hard starting and “engine run-on” often seen in older or high-mileage vehicles.

Key Features & Benefits

  • Octane Enhancement: Boosts octane levels to reduce or eliminate engine knock and ping.

  • Restores Performance: Cleans fuel injectors and intake valves to bring back lost power and throttle response.

  • MMT + Synthetic Technology: Utilizes advanced chemistry to stabilize combustion and protect engine components.

  • 2-in-1 Cleaning & Boosting: Provides the benefits of a fuel system cleaner and a performance enhancer in a single pour.

  • Universal Compatibility: Safe for use in all cars, SUVs, and trucks, as well as high-performance or turbocharged gasoline engines.

  • Emissions Safe: Formulated to be completely safe for oxygen sensors and catalytic converters.

Technical Specifications

Feature Details
Brand STP (Energizer Auto)
Model Number 78574
Unit Size 5.25 fl oz (155 ml)
Pack Size 3 Bottles
Treat Rate 1 bottle treats up to 21 gallons (79L)
Base Carrier High-Quality Jet Fuel
Additives MMT & Synthetic Detergents

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