Description
Product Overview
STP 1 Tank Tune Up Fuel Additive comes in a convenient 12 oz bottle designed for easy pouring into the fuel tank. Formulated by STP, a trusted name in automotive care, the blend targets hydrocarbon reduction, oxygen sensor cleaning, and overall fuel system health. Key specifications include a weight of 12.6 oz, dimensions 8.15 × 3.82 × 1.85 in, and a model number SBFTU12-1US. The additive works by breaking down carbon deposits on injectors, intake valves, cylinder heads and piston tops, while also forming a protective layer on the catalytic converter.
Usage
Add the entire 12 oz bottle to a full tank of gasoline before a long drive or before an emissions test. The product is suitable for gasoline engines in cars, light trucks and SUVs. Ideal for drivers who experience rough idle, hesitation, hard starts or knocking, as well as fleet operators looking to maintain consistent performance across multiple vehicles. 
Why Choose Us
STP leverages decades of research to deliver a formula that not only cleans but also protects critical engine components. Independent lab tests show up to a 50% reduction in hydrocarbon emissions, helping you meet stricter environmental standards. The additive is compatible with all gasoline blends and does not require special tools or professional installation. Customer reviews average 4.4 stars, reflecting reliable performance and noticeable improvements in fuel economy.
Key Features
- Reduces hydrocarbon emissions up to 50% for a cleaner environment
- Cleans oxygen sensors to prevent failure and improve sensor response
- Deep cleans fuel injectors, intake valves, cylinder heads and piston tops
- Improves fuel economy and helps pass emissions tests
- Quietens rough‑running engines, eliminates hesitation and reduces knocking
FAQ
How often should I use STP 1 Tank Tune Up?
For optimal results, use the additive every 3,000 to 5,000 miles or before scheduled emissions testing.
Is the product safe for all gasoline engines?
Yes, the formula is compatible with all standard gasoline engines and does not affect fuel system components.
Can I use it with ethanol‑blended fuels?
Absolutely. STP 1 Tank Tune Up works with E10, E15 and higher ethanol blends without any loss of performance.
Will it void my vehicle warranty?
No. The additive meets OEM specifications and is approved for use without affecting warranty coverage.
Do I need to add it to a full tank?
Adding it to a full or near‑full tank ensures proper mixing and maximizes cleaning efficiency.






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