{"product_id":"stanadyne-diesel-fuel-additive-4-pack-8-oz-performance-formula-cetane-boost-injector-cleaner","title":"Stanadyne Diesel Fuel Additive 4-Pack 8 oz — Performance Formula, Cetane Boost \u0026 Injector Cleaner","description":"\u003cp\u003e\u003cstrong\u003eStanadyne Performance Formula is a concentrated diesel fuel additive that cleans injectors, restores cetane, improves cold-flow properties, and helps recover lost fuel economy and power.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for modern diesel engines and compatible with ultra-low sulfur diesel and biodiesel blends up to B20, this four-pack of 8 oz bottles (part number 38564) treats multiple tanks to help maintain smooth starts, reduce smoke, and protect fuel system components. The formula combines detergency, cetane-boosting chemistry, lubricity agents and demulsifiers so fuel stays cleaner, more stable and less corrosive to injection equipment.\u003c\/p\u003e\n\n\u003ch3\u003eHow will this additive affect engine performance and fuel economy?\u003c\/h3\u003e\n\u003cp\u003eRegular use helps remove deposits from injectors and combustion chambers so fuel burns more completely. That can restore lost horsepower and torque while improving miles per gallon compared with untreated fuel.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDetergents clean injectors and nozzles for better spray patterns.\u003c\/li\u003e\n  \u003cli\u003eCetane improver enhances ignition for smoother running and easier starts.\u003c\/li\u003e\n  \u003cli\u003eIndependent testing has shown average MPG gains and measurable power recovery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill Stanadyne Performance Formula protect my fuel system and emissions equipment?\u003c\/h3\u003e\n\u003cp\u003eThe blend is formulated to protect injection pumps, injectors and fuel lines without harming exhaust aftertreatment systems. It also restores lubricity to low-sulfur blends, helping reduce wear in high-pressure components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLubricity agents reduce metal-on-metal wear in pumps and injectors.\u003c\/li\u003e\n  \u003cli\u003eCorrosion inhibitors limit rust risk in fuel tanks and lines.\u003c\/li\u003e\n  \u003cli\u003eSafe for cooled exhaust systems; contains no alcohol that can damage seals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this product help in cold weather or when fuel quality is poor?\u003c\/h3\u003e\n\u003cp\u003ePerformance Formula improves low-temperature flow and accelerates water separation so filters capture contaminants rather than letting them reach injectors. It also stabilizes fuel to slow oxidation and gum formation in stored diesel.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImproves pour point and cold filter plug point, reducing gelling issues.\u003c\/li\u003e\n  \u003cli\u003eDemulsifiers force tiny water droplets out so separators can remove moisture.\u003c\/li\u003e\n  \u003cli\u003eAntioxidants help maintain fuel quality during storage or seasonal use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use the 8 oz bottles and how many tanks will one pack treat?\u003c\/h3\u003e\n\u003cp\u003eEach 8 oz bottle is a measured dose for a specified volume of diesel (follow label dosing for exact tank sizes). The four-bottle pack gives multiple treatments for recurring maintenance or several vehicles over a season.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShake bottle and add directly to the fuel tank before filling for best mixing.\u003c\/li\u003e\n  \u003cli\u003eOne bottle typically treats a defined gallon range—refer to label directions for your tank size.\u003c\/li\u003e\n  \u003cli\u003eKeep a routine dosing schedule to maintain injector cleanliness and fuel stability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Stanadyne Performance Formula 38564 is aimed at owners and operators of diesel cars, trucks, marine engines, farm equipment and fleet vehicles who want to protect injection components, improve cold-start behavior, and regain lost efficiency. It suits diesel users who run ultra-low sulfur fuels or biodiesel blends up to B20 and those who store fuel seasonally and need stabilizing and water-handling benefits.\u003c\/p\u003e\n\n\u003cp\u003eFeatures at a glance:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImproves Performance \u0026amp; Horsepower\u003c\/li\u003e\n  \u003cli\u003eCold Weather \u0026amp; Anti-Gel Protection\u003c\/li\u003e\n  \u003cli\u003eImproves Fuel Economy\u003c\/li\u003e\n  \u003cli\u003eLubricates, Cleans \u0026amp; Protects\u003c\/li\u003e\n  \u003cli\u003eCorrosion Preventative\u003c\/li\u003e\n  \u003cli\u003eExhaust Aftertreatment Safe\u003c\/li\u003e\n  \u003cli\u003eULSD \u0026amp; B20 Compatible\u003c\/li\u003e\n\u003c\/ul\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: Is this safe for biodiesel blends?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Stanadyne Performance Formula is compatible with biodiesel up to B20 and helps improve separation and stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will it harm my diesel particulate filter or DEF system?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The formula is designed to be safe for exhaust aftertreatment systems and contains no alcohol.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Stanadyne","offers":[{"title":"Default Title","offer_id":55168596738391,"sku":"B01BXECJ7S","price":66.02,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/stanadyne-38564-front-packaging.jpg?v=1790409594","url":"https:\/\/britishgarage.co.uk\/products\/stanadyne-diesel-fuel-additive-4-pack-8-oz-performance-formula-cetane-boost-injector-cleaner","provider":"British Garage","version":"1.0","type":"link"}