Heavy duty fleets are under constant pressure to do more with less. Our latest Heavy Duty Engine Oil customer success story explores how lubrication choice plays a critical role in meeting those demands, from controlling wear to minimizing maintenance downtime.

This engine teardown feature takes a closer look at a real-world example with Trekker, a long-haul fleet that put Guardol ECT^® to the test. Through rigorous oil analysis and a full engine teardown after more than 750,000 miles, the results showed minimal wear, clean internal components, and consistent drain intervals reaching 75,000 miles and beyond.

This resource highlights how oil performance influences operational efficiency, providing valuable insight into the real cost impact of engine protection.