ASJ Products: Fuel Additives, Lubricants, Grease and Oils for Industrial and Commercial Equipment
Find the Right Fuel & Lubrication Solution
Find premium fuel additives, greases, lubricants, and oil treatments designed to reduce downtime, improve reliability and extend equipment life.
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Heavy-Duty Grease
Moly-D and heavy-duty grease for protection under load.
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Diesel Fuel Treatments
Injector protection, fuel pressure, and filter performance.
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Gasoline Fuel Treatments
Keep gasoline clean and fuel systems protected.
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Engine Oil Additive
Engine and industrial oils matched to the job.
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Agricultural Equipment
Solutions for tractors, cotton pickers, combines, sprayers, balers and farm equipment.
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Industrial Solutions
Oils, grease, and lubricants for industrial machinery.
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Marine, RV & Powersports
Fuel care for marine, powersports, generators, classic cars, and small engines.
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Construction Equipment
Solutions for excavators, dozers, loaders, cranes, and other heavy equipment.
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Solutions for tractors, cotton pickers, combines, sprayers, balers and farm equipment.
Shop AgriculturalSolve Common Fuel & Equipment Problems
Poor Fuel Economy?
Learn moreCleaner injectors and more complete combustion means more work per gallon. Restore lost fuel economy with proven treatments.
Low Fuel Pressure or Frequent Regen?
Learn morePrimrose 5007 helps address injector deposits that can contribute to low fuel pressure, poor performance and frequent regeneration cycles.
Water in Gasoline?
Learn morePhaser 3000 helps prevent and reverse phase separation in gasoline, protecting the fuel system from water damage.
Dirty Fuel Tank?
Learn moreClean and stabilize stored fuel before the season turns. Fuel polishing and tank cleaning treatments keep tanks ready.
Maintenance Cost Increasing?
Learn morePremium grease with Moly-D and heavy-duty oils guard critical components in the toughest operating conditions.
Premature Filter Clogging?
Learn moreStop repeat filter changes and the downtime they cause. Power Klenz keeps fuel systems clean so equipment keeps moving.
Optimized Learning Blog Entries
Practical fuel and lubrication guidance to help you protect equipment, improve performance and prevent downtime.
Diesel
4 Diesel Additive Mistakes
Avoiding these four common errors is the key to maximum equipment uptime and avoiding a costly service call for your fleet or...
Read ArticleDiesel
Check Your Fuel Today
Testing your fuel is the fastest way to prevent unexpected downtime and protect your high-pressure common-rail (HPCR) systems from catastrophic failure. The...
Read ArticleGasoline
Master Your Fuel Issues
Ethanol and water contamination are the leading causes of engine downtime, but they donβt have to be. Fuel quality is the foundation...
Read Article
Explore Our Resource Library
Access Primrose products bulletins, educational guides and in-depth resources covering fuel, lubrication and equipment performance.
Ready To Protect Your Equipment And Your Bottom Line?
From individual equipment owners to large fleets, farms and industrial operations, ASJ Products supplies proven Primrose fuel additives, greases, and lubricants nationwide.







