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Fuel/Gasoline

Dependability
in Every Drop

Dependable fuel supply from a family business, backed by quality additives for consistent performance.

Dependability in Every Drop

Dependable fuel supply from a family business, backed by quality additives for consistent performance.

Improve Performance
& Clean Your Fuel System

At STERN, we specialize in providing high-quality Ultra-Low Sulfur Diesel (ULSD) and gasoline tailored to each customer's unique needs. Whether you are a fleet operator, agricultural business, construction company, or retailer, we understand the importance of having the right fuel, at the right time.

Product Data Sheets

2 Dyed Diesel

Tesoro 1 Diesel

Kerosene

Gasoline Unleaded

Gasoline Unleaded w/Ethanol

Diesel 1

Precision Delivery for Your Operations

We understand that downtime is costly. That’s why we are committed to delivering the exact fuel products you need, when you need them—on time, every time. With our reliable logistics and distribution network, we ensure that your diesel and gasoline arrive precisely where you need them, minimizing the risk of delays that disrupt your operations.

Diesel Fuels

Atomic Diesel Fuel

Atomic Diesel is a premium diesel fuel that offers exceptional performance, reduced emissions, and improved fuel economy. Whether you are looking to improve your fleet’s efficiency, reduce your environmental footprint, or simply get the most out of your diesel engine, Atomic Diesel is the fuel of choice for the modern diesel user. Atomic Diesel is available in both cold-weather and warm-weather formulations so you get the best performance out of your fuel all season long.

Diesel Fuels

P40 Diesel Fuel

P40 diesel is a high-quality petroleum-based diesel fuel specifically formulated to deliver consistent power and efficiency for heavy-duty vehicles. With the power of traditional No. 2 ULSD and the cold-weather operability benefits of No. 1 ULSD, P40 is the fuel that ensures dependable ignition, smooth engine operation, and optimal performance under demanding cold-weather conditions.

Diesel Fuels

Ultra Low Sulfur Diesel (ULSD)

As environmental regulations grow increasingly stringent, we provide ULSD that meets the latest standards - helping your business remain compliant, improve engine performance and reduce harmful emissions.  Whether for trucks, machinery, or industrial applications, our ULSD is delivered with the assurance of quality and reliability.

Every business has unique fuel requirements.

Every business has unique fuel requirements. That’s why we provide a full range of ULSD additives designed to solve specific challenges. Whether you’re managing a fleet, operating in extreme seasonal conditions, or maintaining backup generators, we have the right solution to keep your fuel performing at its best.

Diesel Fuel Additives

Ultra-Low Sulfur Diesel (ULSD) Additives

Enhancing Performance and Protection

At STERN, we are committed to helping you get the most out of your fuel. Our comprehensive line of ULSD additives boosts fuel performance, protects your equipment, and extends engine life – regardless of season or operating conditions. With formulations designed for everything from seasonal temperature shifts to power generation, we have the right solution for your business.

Diesel Fuel Additives

Petro Complete – All-Season Diesel Fuel Additive

Cleaner Fuel. Longer Engine Life. Improved Efficiency.

Petro Complete is an advanced fuel treatment formulated for use in all diesel fuels, including ULSD, biodiesel blends, and heating oil. It provides comprehensive protection against deposits, corrosion, water issues, and wear—keeping engines clean, efficient, and running at peak performance.

Key Benefits:

Diesel Fuel Additives

Polar Thaw – Diesel De-Icing Additive

Prevent Fuel Freeze-Ups. Protect Your Equipment.

Polar Thaw is a premium diesel fuel additive designed to prevent and eliminate moisture in tanks and fuel systems before cold weather strikes. It also works as an emergency de-icer to restore fuel flow when filters freeze. With no alcohol content and ultra-low sulfur compliance, Polar Thaw is safe for today’s modern engines and emission systems.

Key Benefits:

Diesel Fuel Additives

Polar Complete – Cold Weather Diesel Fuel Additive

Winter Protection Without Sacrificing Fuel Economy.

Polar Complete is a full-spectrum winter diesel additive engineered for ULSD and biodiesel blends. Combining a Wax Anti-Settling Agent (WASA), Cold Flow Improvers, and a glycol-based de-icer, it ensures reliable performance in extreme cold while improving fuel economy and reducing emissions.

Key Benefits:

Feature/Benefit
Cold Weather Protection Wax Anti-Settling Agent (WASA) | Cold flow improvers | Glycol-based de-icer De-ices frozen filters | Prevents icing
Water Control Rapid Water Separation Prevents water from freezing into ice crystals Eliminates water from tanks & systems
Injector & Engine Cleanliness Detergency keeps injectors clean Detergency keeps injectors clean
Fuel Stability Prevents oxidation & gum formation; Extends storage life 2-3x Prevents oxidation & gum formation; Extends storage life 2-3x
Corrosion Protection Protects tanks, injectors, and pumps Protects tanks, injectors, and pumps Protects fuel system parts
Lubricity Improvement Exceeds ASTM D975 standards Exceeds ASTM D975 standards
Emission Benefits Reduces black smoke by up to 93%; Decreases NOx, HC, CO, PM Reduces black smoke by up to 93%; Decreases NOx, HC, CO, PM
ULSD & Biodiesel Compatible Yes Yes Yes

Why Additives Are Essential for ULSD Performance

As regulations around sulfur content in diesel fuel have tightened, fuel composition has shifted to include higher levels of biodiesel blends. These changes can impact fuel stability and overall engine performance. Our ULSD additives help address these challenges by stabilizing the fuel, improving combustion efficiency, and protecting critical engine components.

Improved Engine Efficiency

Additives optimize fuel combustion, increasing power output while reducing engine wear. This helps extend equipment lifespan and lowers long-term maintenance costs.

Reduced Downtime

By preventing fuel issues such as gelling, microbial growth, and filter clogging, additives lower the risk of costly repairs and unexpected operational interruptions.

Better Cold Weather Performance

The right additives ensure reliable engine operation in extreme temperatures, reducing the risk of failures during critical conditions.

Enhanced Fuel Stability

Our additives preserve fuel integrity over time, keeping fuel fresh during long storage periods and seasonal transitions.

Cleaner Fuel Systems

Additives clean and protect fuel systems from deposits and corrosion, helping engines run smoothly and efficiently.

Let’s fuel your success

At STERN, we are more than just a fuel supplier – we are a dedicated partner in helping your business operate at its best. Whatever your fuel needs, we have you covered with premium Ultra- Low Sulfur Diesel and gasoline delivered, precisely when you need it. Contact us today to learn more or request a delivery.

DEPENDABILITY: Our fleet of delivery trucks ensures prompt fuel delivery, keeping your business running without interruption.

CUSTOMIZATION: We tailor our service to fit your specific needs—whether that’s managing fuel inventory or delivering on a flexible schedule.

EXPERTISE: Once your contract is in place, we don’t stop there. Our team monitors market conditions and your fuel usage to ensure you always receive the best possible value. We are committed to delivering exceptional service for the full duration of your contract.

Gasoline That Powers Your Business

For businesses that rely on gasoline for their daily operations, we provide high-quality fuel that meets or exceeds industry standards. Our gasoline is formulated to enhance efficiency and performance, keeping your vehicles and equipment running smoothly for longer.

Consultation

We start by understanding your fuel usage and business requirements. Our team works with you to determine the best contract option, considering factors such as your delivery schedule, consumption volume, and budget goals.

Contract Agreement

Based on your needs, we provide a customized contract that aligns with your operational and financial goals. Whether you choose fixed-price, indexed pricing, or another flexible option, we ensure the terms fit your requirements.

Ongoing Support

Once your contract is in place, we don’t stop there. Our team monitors market conditions and your fuel usage to ensure you always receive the best possible value. We are committed to delivering exceptional service for the full duration of your contract.

Get the Most Out of Your Fuel

Don’t let fuel-related issues slow down your operations. Contact us today to learn more about our full line of ULSD additives and discover the right solutions for your business. With STERN, you can trust your fuel to perform at its best—no matter the weather or operating conditions.

Get the Most Out of Your Fuel

Don’t let fuel-related issues slow down your operations. Contact us today to learn more about our full line of ULSD additives and discover the right solutions for your business. With STERN, you can trust your fuel to perform at its best—no matter the weather or operating conditions.

Serving Communities in Your Area!

Freeman, SD

Parkston, SD

Sioux Falls, SD

Yankton, SD

Custer, SD

Wall, SD

Montrose, SD

Beresford, SD

Huron, SD

De Smet, SD

Rapid City

Miller, SD

Redfield, SD

Woonsocket, SD

Edgemont, SD

Belle Fourche, SD

New Castle, WY

Sundance, WY

Oelrichs, SD

Chadron, NE

Find Service Near You

Serving Communities in Your Area!

Freeman, SD

Parkston, SD

Sioux Falls, SD

Yankton, SD

Montrose, SD

Beresford, SD

Huron, SD

De Smet, SD

Miller, SD

Redfield, SD

Woonsocket, SD

Edgemont, SD

New Castle, WY

Oelrichs, SD

Chadron, NE

Belle Fourche, SD

Sundance, WY

Rapid City, SD

Custer, SD

Wall, SD

Find Service Near You

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