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Choosing the Right Coolant for Your Fleet

What BC Trucking Companies Need to Know

In British Columbia, trucking fleets face some of the most demanding operating conditions in North America. From long-haul routes through the Rockies and coastal corridors to stop-and-go urban deliveries, heavy-duty engines rely on one critical fluid to keep them operating efficiently year-round: coolant.

Selecting the right coolant is about much more than freeze protection. It plays a vital role in preventing corrosion, protecting engine components, regulating operating temperatures, and reducing costly downtime. Understanding the different coolant technologies available can help fleet managers make informed maintenance decisions that improve reliability and lower operating costs.

OAT Coolants: The Preferred Choice for Modern Fleets

Organic Acid Technology (OAT) coolants have become the standard for many modern heavy-duty trucks because they provide extended service life and exceptional corrosion protection.

OAT coolants are nitrite-free and are designed to meet the requirements of today’s advanced diesel engines, including those equipped with modern emissions systems. Their long service intervals help reduce maintenance requirements and keep trucks on the road longer.

Best suited for:

• Modern Class 6, 7 and 8 trucks
• Fleets seeking longer drain intervals
• Operations focused on lowering maintenance costs and maximizing uptime

Chevron Recommendation

Chevron Delo® XLC Antifreeze/Coolant offers proven long-life protection and is designed to help fleets reduce maintenance while protecting critical engine components.

N-OAT Coolants: Extra Protection for Heavy-Duty Diesel Engines

Nitrited Organic Acid Technology (N-OAT) coolants provide all the benefits of OAT technology while adding nitrite protection for wet-sleeve cylinder liners commonly found in many heavy-duty diesel engines.

This added protection helps prevent liner pitting and cavitation, making N-OAT coolants an excellent choice for fleets operating severe-duty equipment or maintaining mixed engine platforms.

Best suited for:

• Heavy-duty diesel applications
• Mixed fleets with varying engine generations
• Operations requiring enhanced liner protection

Chevron Recommendation

Chevron Delo® ELC Antifreeze/Coolant delivers superior protection against corrosion, cavitation, scale, and overheating, helping extend engine life and reduce maintenance costs.

Conventional Coolants: Still Found in Older Equipment

Inorganic Additive Technology (IAT) coolants, often recognized as the traditional “green” coolant, are still used in some legacy equipment and older trucks.

While effective, these products require more frequent monitoring and shorter service intervals than modern extended-life alternatives.

Best suited for:

• Older trucks and equipment
• Fleets with established preventative maintenance programs

Chevron Option

Chevron Havoline® Conventional Antifreeze/Coolant remains a reliable solution for older applications where conventional coolant technology is specified.

Why Coolant Selection Matters More Than Ever

As fleet equipment becomes more sophisticated, cooling system performance has become increasingly important. A properly selected and maintained coolant can help:

• Reduce unplanned downtime
• Protect against corrosion and cavitation
• Extend water pump and cooling system component life
• Improve engine reliability
• Lower total maintenance costs
• Support longer service intervals

For trucking companies operating across British Columbia, these benefits translate directly into improved productivity and profitability.

Partner with a Coolant Expert

Choosing the right coolant is not always straightforward, especially for fleets operating multiple truck brands and engine platforms.

As an authorized Chevron Lubricants Marketer, Catalys Lubricants provides access to Chevron’s industry-leading coolant technologies, including the full Delo® coolant lineup. Our team works with fleets across Canada to help identify the right solution for their equipment, maintenance strategy, and operating conditions.

Whether you’re running regional delivery trucks, long-haul highway tractors, vocational fleets, or mixed equipment operations, Catalys can help you optimize cooling system performance and maximize equipment uptime.

Learn More

To learn more about Chevron Delo® coolants and how they can help protect your fleet, contact Catalys Lubricants at [email protected]. Our technical team can help you select the right coolant technology for your operation.