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Curious which diesel oil is best for your application? Find the exact oil and filter you need.

What fits my vehicle?

AMSOIL Diesel Additives

 Optimize your diesel engine's performance with AMSOIL Diesel Fuel Additives, engineered to address the unique challenges of modern diesel engines. Whether you’re seeking enhanced fuel efficiency, improved cold-weather performance, or reliable emergency solutions, AMSOIL has you covered.

Key benefits include:

  • Cleaner injectors and improved fuel economy: Prevents deposits and reduces injector wear for peak efficiency and up to 8% better fuel economy​(Diesel All-in-One Addit…)​(Diesel Injector Clean D…).
  • Enhanced cold-weather reliability: Prevents gelling, reduces wax settling, and improves flowability in extreme conditions​(Diesel All-in-One Addit…)​(Diesel Cold Flow Additi…).
  • Increased cetane for smoother operation: Raises cetane up to 8 points, ensuring easier starts, smoother idling, and reduced emissions​(Diesel Cetane Boost Dat…)​(Diesel Injector Clean +…).
  • Emergency performance: Quickly dissolves gelled fuel and thaws frozen fuel filters to get you back on the road​(Diesel Recovery Data Sh…).

AMSOIL’s diesel additive lineup includes:

  • Diesel All-In-One: Combines detergency, lubricity, and cold-weather performance in a single, all-season solution​(Diesel All-in-One Addit…).
  • Diesel Injector Clean: Targets tough internal and traditional injector deposits while lubricating pumps and injectors​(Diesel Injector Clean D…).
  • Diesel Cetane Boost: Maximizes power and improves startability by raising fuel cetane​(Diesel Cetane Boost Dat…).
  • Diesel Cold Flow: Protects against gelling and improves low-temperature operability​(Diesel Cold Flow Additi…).
  • Diesel Injector Clean + Cetane Boost: A dual-action formula for enhanced cleaning and performance​(Diesel Injector Clean +…).
  • Diesel Recovery: Emergency treatment for gelled fuel, restoring flow quickly and safely​(Diesel Recovery Data Sh…).

Whether for heavy-duty trucking, off-road machinery, or light-duty diesel vehicles, AMSOIL Diesel Fuel Additives deliver unmatched protection, reliability, and performance to keep your engine running strong.

AMSOIL Diesel All-In-One Fuel Additive

AMSOIL Diesel Injector Clean Fuel Additive

AMSOIL Diesel Injector Clean Fuel Additive

AMSOIL Diesel All-In-One Fuel Additive

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AMSOIL Diesel Injector Clean Fuel Additive

AMSOIL Diesel Injector Clean Fuel Additive

AMSOIL Diesel Injector Clean Fuel Additive

AMSOIL Diesel Injector Clean Fuel Additive

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AMSOIL Diesel Cetane Boost Fuel Additive

AMSOIL Diesel Injector Clean Fuel Additive

AMSOIL Diesel Cetane Boost Fuel Additive

AMSOIL Diesel Cetane Boost Fuel Additive

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AMSOIL Diesel Cold Flow Fuel Additive

AMSOIL Diesel Injector Clean + Cetane Boost Fuel Additive

AMSOIL Diesel Cetane Boost Fuel Additive

AMSOIL Diesel Cold Flow Fuel Additive

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AMSOIL Diesel Recovery Fuel Treatment

AMSOIL Diesel Injector Clean + Cetane Boost Fuel Additive

AMSOIL Diesel Injector Clean + Cetane Boost Fuel Additive

AMSOIL Diesel Recovery Fuel Treatment

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AMSOIL Diesel Injector Clean + Cetane Boost Fuel Additive

AMSOIL Diesel Injector Clean + Cetane Boost Fuel Additive

AMSOIL Diesel Injector Clean + Cetane Boost Fuel Additive

AMSOIL Diesel Injector Clean + Cetane Boost Fuel Additive

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Benefits of AMSOIL Signature Series 100% Synthetic Max-Duty

 Protect your diesel engine with AMSOIL's most advanced formula—Signature Series 100% Synthetic Max-Duty Diesel Oil. Engineered for diesel enthusiasts and hardworking professionals, this oil delivers 6X better wear protection than industry standards, ensuring your engine runs stronger for longer. With superior viscosity control, it resists the thickening effects of soot and oxidation, maintaining peak performance even in extreme conditions.

Key benefits include:

  • Exceptional wear protection: Guards vital components like rings and cylinder liners, preserving power and fuel efficiency.
  • Extreme temperature performance: Stays fluid in sub-zero starts and resists breakdown during high-heat operations.
  • Reduced oil consumption: Offers up to 76% less burn-off compared to conventional oils.
  • Turbocharger cleanliness: Keeps turbochargers running at maximum efficiency, even under heavy loads.

Whether you're pushing through tough jobs or towing with confidence, Signature Series Max-Duty Diesel Oil provides the durability and dependability your diesel deserves. Designed for extended drain intervals, this oil protects your investment while saving time and money.

AMSOIL Signature Series 0W-40 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 0W-40 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 0W-40 100% Synthetic Max Duty Diesel Oil

Quart and gallon bottles of AMSOIL Signature Series Max Duty Diesel Oil 0W-40

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AMSOIL Signature Series 5W-30 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 0W-40 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 0W-40 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 5W-30 100% Synthetic Max Duty Diesel Oil quart and gallon bottles

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AMSOIL Signature Series 5W-40 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 0W-40 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 10W-30 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 5W-40 100% Synthetic Max Duty Diesel Oil quart and gallon bottle

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AMSOIL Signature Series 10W-30 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 10W-30 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 10W-30 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 10W-30 100% Synthetic Max Duty Diesel Oil quart and gallon bottle

At JDK Synthetics, we believe in sustainable fashion. That's why we offer a range of eco-friendly and ethically-made products. Shop our sustainable collection and make a difference today.

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AMSOIL Signature Series 15W-40 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 10W-30 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 15W-40 100% Synthetic Max Duty Diesel Oil

AMSOIL Signature Series 15W-40 100% Synthetic Max Duty Diesel Oil quart and gallon bottle

Enjoy free shipping on all orders over $50. Shop now and get your items delivered straight to your door. Plus, take advantage of hassle-free returns and exchanges if you're not completely satisfied.

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Benefits of AMSOIL Heavy-Duty 100% Synthetic Diesel Oil

 Keep your diesel equipment running at peak performance with AMSOIL Heavy-Duty 100% Synthetic Diesel Oil. Designed for hard-working engines, this oil delivers 4X better wear protection than required by industry standards, helping reduce maintenance costs and extend engine life. Its advanced synthetic base oils and detergent additives ensure superior viscosity control and protect against soot build-up, keeping your engine clean and efficient.

Key benefits include:

  • Enhanced engine durability: Reduces wear on critical components like rings and cylinder liners for maximum lifespan.
  • Extreme temperature reliability: Performs in severe heat and stays fluid in freezing conditions for dependable cold starts.
  • Reduced oil consumption: Up to 66% less burn-off compared to standard oils, minimizing waste and improving value.

Whether you're hauling heavy loads, working on job sites, or maintaining a fleet, AMSOIL Heavy-Duty Synthetic Diesel Oil provides the reliability and efficiency your equipment demands.

AMSOIL Heavy-Duty 5W-40 100% Synthetic Diesel Oil

AMSOIL Heavy-Duty 10W-30 100% Synthetic Diesel Oil

AMSOIL Heavy-Duty 10W-30 100% Synthetic Diesel Oil

AMSOIL Heavy-Duty 5W-40 100% Synthetic Diesel Oil quart and gallon bottle

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AMSOIL Heavy-Duty 10W-30 100% Synthetic Diesel Oil

AMSOIL Heavy-Duty 10W-30 100% Synthetic Diesel Oil

AMSOIL Heavy-Duty 10W-30 100% Synthetic Diesel Oil

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AMSOIL Heavy-Duty 15W-40 100% Synthetic Diesel Oil

AMSOIL Heavy-Duty 15W-40 100% Synthetic Diesel Oil

AMSOIL Heavy-Duty 15W-40 100% Synthetic Diesel Oil

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AMSOIL 15W-40 Heavy-Duty Diesel and Marine Oil

AMSOIL Heavy-Duty 15W-40 100% Synthetic Diesel Oil

AMSOIL Heavy-Duty 15W-40 100% Synthetic Diesel Oil

AMSOIL 15W-40 Heavy-Duty Diesel and Marine Oil quart and gallon bottle

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AMSOIL Commercial-Grade Diesel Oil

 Elevate your fleet's performance with AMSOIL Commercial-Grade Diesel Oil, a high-value, synthetic-blend oil with over 50% synthetic content. Engineered to deliver 2X better wear protection than conventional oils, it ensures your equipment runs efficiently while reducing downtime and maintenance costs. Its advanced formulation minimizes viscosity change and keeps soot particles suspended to prevent wear-causing deposits.

Key benefits include:

  • Durable engine protection: Protects against wear on critical components like cylinder liners and rings, preserving engine power and efficiency.
  • Dependable in extreme conditions: Withstands severe heat and remains fluid in cold temperatures for consistent performance.
  • Reduced oil consumption: Lower burn-off helps maintain clean combustion chambers and extends component life.

Whether you're managing a commercial fleet or operating heavy-duty equipment on a budget, AMSOIL Commercial-Grade Diesel Oil delivers reliable protection and outstanding value for demanding applications.

AMSOIL Commercial-Grade Diesel Oil 10W-30

AMSOIL Commercial-Grade Diesel Oil 10W-30

AMSOIL Commercial-Grade Diesel Oil 10W-30

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AMSOIL Commercial-Grade Diesel Oil 15W-40

AMSOIL Commercial-Grade Diesel Oil 10W-30

AMSOIL Commercial-Grade Diesel Oil 10W-30

AMSOIL Commercial-Grade Diesel Oil 15W-40 2.5-gallon bottle

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AMSOIL 100% Synthetic European Motor Oil

 Experience precision-engineered performance with AMSOIL 100% Synthetic European Motor Oil, specially formulated for the unique demands of European gasoline, diesel, and hybrid engines. Designed to meet the exacting standards of European automakers, this oil provides reliable protection while supporting emissions system performance.

Key benefits include:

  • Exceptional engine cleanliness: Fights sludge and deposit build-up for superior performance and longevity.
  • Turbocharger protection: Resists high-temperature breakdown, cooling turbochargers and preventing oil starvation during cold starts.
  • Extended drain intervals: Maintains dependable performance throughout the long service intervals recommended by European manufacturers.

Whether you drive a high-performance gasoline car or a fuel-efficient diesel, AMSOIL European Motor Oil offers tailored protection for engines requiring top-tier lubrication.

AMSOIL 100% Synthetic European Motor Oil

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Oil & Diesel Analysis

 AMSOIL oil analysis kits provide a comprehensive solution for monitoring the condition and performance of engine oil in various vehicles and machinery. These kits are designed to help users detect potential issues before they lead to significant problems by analyzing the oil for contaminants, wear metals, and other indicators of engine health. By utilizing Oil Analyzers state-of-the-art laboratory services, users receive detailed reports on the oil's condition, helping to optimize maintenance schedules and extend the lifespan of engines. This proactive approach not only enhances equipment reliability but also maximizes efficiency and minimizes downtime and repair costs. Additionally, incorporating oil analysis into routine maintenance practices can lead to significant long-term savings and ensures that machines operate at peak performance. 

Oil Analysis Kits

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Diesel Fuel Test kits

Select diesel fuel contamination or performance test kit

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Get the best oil for your vehicle!

Get top quality synthetic oil from JDK Synthetics

Keeping your vehicle's engine in top shape is essential for its longevity and performance. At JDK Synthetics, we provide the best options for buying AMSOIL to help protect your engine from wear and tear. Our strategic list of distribution centers across USA and Canada will get your orders to you quick. We offer various packages of synthetic diesel oil to choose from that suit your budget and preferences. Visit our full line-up of heavy duty diesel oil options and get your oil on its way to you! Check out What Fits My Vehicle

AMSOIL diesel oil, in options.

Shop All AMSOIL Synthetic Diesel Oil

Check out our full list of diesel oil available to your door
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