Stanadyne Diesel Fuel Additive Pack of 2 Pints — Performance Formula, Cleans Injectors & Restores Power

Stanadyne Performance Formula is a concentrated diesel treatment sold as two pint bottles that cleans injectors, restores power, improves fuel economy, and conditions fuel for colder operation.

This two‑pint pack treats up to 120 gallons of diesel and combines detergents, cetane improvers, lubricity agents, demulsifiers, corrosion inhibitors and cold‑flow enhancers in a single formula. It’s designed for modern ultra low sulfur diesel and is compatible with biodiesel blends up to B20. Use it as a preventative maintenance dose or when fuel quality and performance need a measurable boost.

How does this additive improve engine performance?

The formula contains targeted detergents and deposit modifiers that remove and prevent buildup on injectors, pumps and nozzles. Cleaner fuel system components help the engine combust fuel more completely, restoring lost horsepower and smoothing acceleration.

• Detergents dissolve varnish and carbon deposits in injection systems
• Cetane improver promotes faster, more complete combustion
• Improved atomization leads to better throttle response and torque

Will it actually save fuel and reduce emissions?

Independent testing has shown measurable fuel economy improvements when injection deposits are removed and combustion efficiency is increased. At the same time, cleaner combustion reduces visible smoke and particulate output without affecting exhaust aftertreatment systems.

• Average MPG improvement around 4%, with gains reported up to 9.6%
• Reduces smoke and particulates by promoting cleaner burn
• Formulated to be safe for catalytic converters, DPFs and SCR systems

How does it protect the fuel system and handle water or cold weather?

The blend restores lubricity lost in ultra low sulfur diesel, fights corrosion, and helps separate tiny water droplets so filters and separators can remove them. Cold‑flow additives in the formula lower pour and cold filter plug points, extending reliable operation in cooler temperatures.

• Lubricity agents protect pumps, injectors and seals from wear
• Demulsifiers release microscopic water for easier removal by filters
• Cold‑flow improvers can improve pour point and cold filter plug point depending on base fuel

How do I use the two‑pint pack and what does it treat?

Each 16‑oz bottle treats approximately 60 gallons of diesel; both bottles together treat about 120 gallons. Add the recommended dose directly to the fuel tank before refueling or with fuel level low, then run the engine to mix the additive through the system.

• One bottle treats ~60 gallons; two bottles treat ~120 gallons
• Compatible with ULSD and biodiesel blends up to B20
• Contains no alcohol, helping avoid corrosion and accelerated wear

Who is this for: Owners and operators of diesel cars, trucks, farm machinery, construction equipment and marine engines who want to restore lost power, improve fuel economy, protect fuel system components, control water contamination, and maintain reliable cold‑weather starting. It’s suitable for routine maintenance or targeted corrective treatments on engines using ultra low sulfur diesel or biodiesel blends up to B20.