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Item #:
17523820
Stanadyne Performance Formula Diesel Fuel Additive 4 Pack of 1/2 Gallon Jugs - Part # 38566
Item #:
17523820
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Restores/Increase Horsepower – detergents clean deposits in the injection system
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What Stands Out
Enhanced Performance
This diesel fuel additive improves engine efficiency and power by cleaning injectors and combustion chambers, leading to better fuel economy and reduced emissions compared to standard diesel treatments.
4-Pack Value
Offered in a convenient 4-pack of 12-gallon jugs, this product provides great value for diesel vehicle owners, ensuring prolonged use and consistent performance improvements without frequent repurchases.
Cold Weather Protection
Stanadyne's unique formula includes anti-gel additives, preventing fuel gelling in cold temperatures, which is essential for maintaining engine functionality and reliability during harsh winter conditions.
Product Details
- Stanadyne Diesel Fuel Additive Performance Formula® Diamond Diesel presents the:All-season, multi-function Diesel fuel additive, designed to tackle virtually any diesel fuel related problem. Stanadyne brand diesel fuel additives are the only ones in the world that are:Developed by a fuel injection systems manufacturerTested and approved by major engine and vehicle manufacturersProven to perform best in independent testsVirtually for every engine application big or small:ON ROAD – OFF ROAD – MARINEPRODUCT BENEFITS:Restores/Increase Horsepower – detergents clean deposits in the injection system resulting in improved combustion, better acceleration, power, and torqueReduces Fuel Consumption – independent tests show an average of 4% improvement in MPG and gains up to 9.6%Cetane Improver – improves combustion resulting in better engine starting, smooth running, and reduced engine noiseMeets all engine fuel system requirements and will not harm exhaust aftertreatment systemsReduces Emissions – reduces Smoke and ParticulatesCleans and Protects – detergents and deposit modifiers help protect injection pumps, injectors, nozzles, etc.Reduces Wear – lubricity improvers restore lubricity to ultra low sulfur and other low lubricity diesel fuelsStabilizes Fuel -keeps fuel fresher and protects against formations of gums caused by oxidationCold Weather Protection – improves diesel pour point up to 40°F (22°C), and cold filter plug point by up to 25°F (13°C), depending on base fuelCorrosion Preventative – Corrosion inhibiters will protect the fuel system from rust and corrosionHelps Remove Water – special demulsifiers cause tiny water droplets to come out of suspension/emulsion, so the filter/separator can more effectively remove waterContains No Alcohol – avoids corrosion and accelerated wearSpecially Formulated for use with ultra low sulfur diesel fuelCan be used with Bio Diesel Fuel up to B20 (20% bio content approved)
| Brand | Stanadyne |
| Rec. use | Automotive |
| Volume capacity | 64 fl oz |
| Size | 1/2 Gallon |
| Compatible cars | All Vehicles with Diesel Engines |
| Automotive parts division | Performance |
| Is bulk | Y |
| Item Weight | 4 lbs (1.81 kg) |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
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Diesel Vehicle Owners
Ideal for diesel vehicle owners seeking enhanced performance and engine cleanliness to improve fuel efficiency.
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Fleet Operators
Perfect for fleet operators who require consistent fuel performance and protection across multiple vehicles.
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Cold Weather Users
Beneficial for those operating in cold climates, as it helps prevent fuel gelling and improves cold start performance.
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Gasoline Users
Not suitable for gasoline engines, as it is specifically formulated for diesel fuel treatments.
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Small-Scale Users
May not be ideal for casual users due to the bulk packaging of four 12-gallon jugs.
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Infrequent Drivers
Not recommended for infrequent drivers who may not benefit from regular additive use, risking degradation over time.
Product Description
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Question: Is Available to Shop Online in Ireland?
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Question: How Long Does It Take to Get Product After Placing the Order?
Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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Features & Benefits
- Boosts horsepower by cleaning injector deposits
- Reduces fuel consumption by up to 4%
- Improves combustion for better engine performance
- Meets engine fuel system requirements and reduces emissions
- Protects against wear, stabilizes fuel, and provides cold weather protection
- Specially formulated for ultra low sulfur diesel fuel and bio diesel fuel up to B20
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