{"product_id":"stp-fuel-system-cleaner-fuel-injector-additive-12-fl-oz-single-tank-high-concentration-detergents","title":"STP Fuel System Cleaner \u0026 Fuel Injector Additive — 12 fl oz Single-Tank, High-Concentration Detergents","description":"\u003cp\u003e\u003cstrong\u003eSTP 1 Tank Tune Up is a concentrated fuel system cleaner and fuel additive designed to deep-clean injectors, intake valves, and combustion chamber deposits in a single 12 fl oz treatment.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis concentrated formula from STP delivers the brand’s strongest cleaning blend for gasoline engines, engineered to survive high combustion temperatures and reach hard-to-clean areas across the fuel delivery and exhaust chain. One bottle treats a full tank to help remove build-up that can reduce efficiency, contribute to rough idling, or interfere with emissions components. It’s intended as routine maintenance or a pre-test tune-up; follow vehicle manufacturer recommendations and local regulations for emissions and service intervals.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this additive clean fuel injectors and intake valves?\u003c\/h3\u003e\n\u003cp\u003eThe proprietary STP blend contains high-concentration detergents and thermal-stable agents that flow through the fuel system and into the combustion chamber, loosening varnish and carbon deposits. Because the formula is designed to withstand high temperatures, active ingredients remain effective through the intake, valves, and piston tops for deeper cleaning.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-concentration detergents for injector and port cleaning\u003c\/li\u003e\n  \u003cli\u003eThermally stable agents that survive combustion heat\u003c\/li\u003e\n  \u003cli\u003eOne 12 fl oz dose treats a full tank for a single-use clean\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this product help my vehicle pass an emissions test?\u003c\/h3\u003e\n\u003cp\u003eSTP 1 Tank Tune Up aims to reduce hydrocarbon emissions by cleaning components that affect combustion quality and catalytic converter function. By lowering deposit levels on oxygen sensors and improving fuel burn, it can assist vehicles in approaching cleaner running conditions, though results depend on vehicle age and condition.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHelps reduce hydrocarbon emissions by addressing buildup\u003c\/li\u003e\n  \u003cli\u003eSupports oxygen sensor performance and catalytic converter protection\u003c\/li\u003e\n  \u003cli\u003eMay improve chances of passing emissions testing when deposits are a contributing factor\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will this additive affect fuel economy and engine performance?\u003c\/h3\u003e\n\u003cp\u003eRemoving deposits from injectors and intake areas can restore more even fuel spray and combustion, which often improves throttle response and fuel efficiency. Consumers typically use this as a maintenance step to return drivability closer to original factory performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTargets fuel injectors, intake valves, cylinder heads, and piston tops\u003c\/li\u003e\n  \u003cli\u003eCan improve fuel delivery consistency and combustion efficiency\u003c\/li\u003e\n  \u003cli\u003eOne bottle is formulated for a single-tank treatment to simplify application\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use STP 1 Tank Tune Up and when is it recommended?\u003c\/h3\u003e\n\u003cp\u003ePour one 12 fl oz bottle into a full tank of gasoline before filling, then drive normally to allow the formula to circulate and clean the system. Use as part of routine maintenance or before emissions testing; frequency depends on driving conditions and manufacturer guidance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse one bottle per full tank of gasoline\u003c\/li\u003e\n  \u003cli\u003eBest applied before driving to circulate cleaning agents through the system\u003c\/li\u003e\n  \u003cli\u003eFollow product label and vehicle manufacturer instructions for safe use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? STP 1 Tank Tune Up is intended for drivers and vehicle maintainers who fuel gasoline engines and want a concentrated, single-dose solution to address injector and intake deposits. It’s suitable for passenger cars, light trucks, and SUVs as part of scheduled maintenance or a pre-test tune-up. Avoid use in diesel engines and consult your vehicle manual if unsure about additive compatibility.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much STP 1 Tank Tune Up do I use per tank?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use one 12 fl oz bottle per full gasoline tank — pour in before or during refueling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this safe for my catalytic converter and oxygen sensors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The formula is designed to help protect catalytic converters and clean oxygen sensors by reducing deposit-related issues.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"STP","offers":[{"title":"Default Title","offer_id":67593925853369,"sku":"B0BS1R5RJ5","price":54.23,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/stp-front-packaging-12oz.jpg?v=1790580777","url":"https:\/\/redleafauto.ca\/products\/stp-fuel-system-cleaner-fuel-injector-additive-12-fl-oz-single-tank-high-concentration-detergents","provider":"Redleaf Auto","version":"1.0","type":"link"}