May 30, 2024

When to Change Your Heavy-Duty Vehicle's Fluids: A Complete Guide

Our guide consolidates maintenance information for fluid changes and filter replacements, simplifying truck service intervals.

When to Change Your Heavy-Duty Vehicle's Fluids

In the world of truck maintenance, one of the biggest challenges is keeping track of service intervals for different vehicle types. Whether you're managing a fleet of light, medium, or heavy-duty trucks, knowing when to change fluids and filters is crucial for optimal performance and longevity. However, this information is often scattered across various sources, making it difficult to find and consolidate. 

That's why we've taken the initiative to create a comprehensive guide that brings all this vital information together in one convenient place. From fluid changes to filter replacements, our guide aims to simplify the maintenance process, ensuring your fleet runs smoothly and efficiently.

Fluid Change Intervals for Different Truck Types

Light-Duty Trucks

Light-duty trucks generally require less robust maintenance schedules, yet regular checks are vital to ensure their longevity. The following intervals were pulled from sources like Ford’s service interval chart for the F250. Be sure to use this information as a guide, as the specifics will vary by make and model. 

  • Oil and Oil Filter: Change every 10,000 to 15,000 km, or at least once a year.
  • Coolant: Replace every 100,000 to 150,000 km or every two years.
  • Power Steering Fluid: Inspect levels monthly and top up as needed; replace every 200,000 km.
  • Transmission Fluid: Typically every 200,000 km.
  • Transfer Case Fluid: Typically every 200,000 km, when changing Transmission Fluid. 
  • Differential Fluid: Every 200,000 miles.
  • Fuel Filter: Replace every 20,000 to 30,000 km, or with every oil change. 
  • Cabin Air Filter: Every 15,000 to 25,000 km.
  • Engine Air Filter: Check annually and replace as needed, generally every 15,000 to 30,000 km.

Heavy-Duty Trucks

Heavy-duty trucks are built to handle the toughest tasks and environments, necessitating a robust maintenance schedule. The following intervals are sourced from manufacturers like Mack and Volvo, and should be used as a guide. Please refer to your manufacturer’s specific guidelines by model for a direct reference. 

  • Oil and Oil Filtersome text
    • Greater Than 50L / 100km: 55,000 to 65,000 Km
    • Less Than 50l / 100km: 70,000 to 80,000 km 
  • Coolant: some text
    • Long Life Coolant: Replace every 1,200,000 to 1,600,000 km or every 96 months. 
    • Formulated Coolant: Replace every 500,000 km. 
  • Power Steering Fluid: Replace every 240,000 km, or once every 12 months. 
  • Transmission Fluid: Change every 800,000 km.
  • Transfer Case Fluid: Change with Transmission Fluid (if applicable)
  • Differential Fluid: Every 800,000 km.
  • Fuel Filter: Alongside every oil change. 
  • Cabin Air Filter: Every 20,000 to 30,000 km.
  • Engine Air Filter: Check every 6 months and replace as needed, generally every 15,000 to 20,000 km.

Why Timely Fluid and Filter Changes Matter

Keeping up with these maintenance intervals is not just about following guidelines—it's about ensuring that each part of your truck is protected from wear and tear, thus extending its life and maintaining its performance. Fluids lubricate, cool, and clean various components of your vehicle; over time, they degrade and lose effectiveness. Similarly, filters prevent harmful contaminants from entering the engine and cabin spaces, but they become less effective as they accumulate dirt and debris.

Neglecting these fluid and filter changes can lead to decreased engine performance, higher fuel consumption, and ultimately, premature breakdowns. At Rhino Truck Lube Centres, we provide comprehensive maintenance services tailored to the specific needs of your truck, whether it's light, medium, or heavy-duty. Trust us to keep your fleet running smoothly and efficiently with regular fluid checks and replacements, ensuring that every mile you drive is worry-free.

Final Thoughts

At Rhino Truck Lube Centres in Woodstock, Ontario, we're committed to helping you manage the health of your vehicles. By adhering to the fluid and filter change intervals outlined in this guide, you ensure that your fleet operates at peak performance, reducing downtime and saving money on repairs. Visit us for personalized service and expert advice tailored to the unique needs of your trucks, and let us help you keep your vehicles in prime condition.