Miller Trucking’s previous fleet maintenance approach relied on traditional SAE 15W-40 oils, with oil drain intervals capped at 20,000 miles. While this method had worked for years, Nathan knew there had to be a better way to extend vehicle life, reduce costs and increase uptime. With a mix of aging trucks, some exceeding 500,000 miles, optimizing maintenance became even more critical.

The business had experimented with various oils in the past in an effort to push service intervals further. However, it wasn’t until Valley Pacific Petroleum Service, authorized distributor for Petro-Canada Lubricants, an HF Sinclair brand, introduced the DURON Challenge that a real breakthrough was made.

Greg Fee, Territory Manager at Valley Pacific, worked closely with Nathan and his team, listening to their needs and pain points, and proposed DURON UHP 10W-40 as a high performance alternative. The approach was methodical: starting with two test trucks, oil sampling was conducted at 20,000, 30,000 and 40,000 miles. The results consistently showed outstanding oil performance and engine protection.

When one truck exceeded 50,000 miles on the same oil change, Nathan anticipated complications, but the oil analysis report told a different story. The oil remained in excellent condition, with no performance degradation. Encouraged by the findings, Miller Trucking systematically extended oil drain intervals across the fleet, proving that switching to DURON UHP 10W-40 was a game-changing decision.

• Oil changes doubled from 20,000 to 40,000 miles, cutting maintenance downtime in half.
• Annual savings of 50% across the fleet by reducing oil change frequency and usage.

• Level 2 oil analysis revealed early signs of maintenance issues, including a loose air filter clamp and a coolant leak, allowing for proactive fixes before they became costly problems.
• Improved visibility into fleet health ensures better decision-making and longevity of vehicles.

• Oil now lasts significantly longer than fuel filters, leading Miller Trucking to adjust its maintenance schedule, where fuel filters are now replaced at 30,000 miles and oil changes have been extended to 40,000 miles.