Two identical vehicles, for example, won’t always need oil changes at the same time. The first could travel 50,000 miles without an oil change, while the second could need an oil change after only 15,000 miles. This difference in performance results from three issues:

• Condition of the engine. Frequent use can cause stress on the engine and reduce oil efficiency.  
• Driver habits and terrain. Trucks driven on steep inclines or unpaved roads or driven roughly can reduce the fuel efficiency.
• Oil quality. Poor-quality oil won’t last as long as high-quality oil and can damage your vehicle’s engine

Change your oil less by paying attention to the engine’s performance and using high quality oil, as well as having awareness of your drivers’ routes and speeds.

Elements Effecting oil Change Interval

Some elements that can damage your engine’s quality are unavoidable. For example, the number of miles a truck travels is a key factor in its engine’s longevity. If a truck makes several cross–country deliveries for many years in a row, the engine won’t last for as many years as a truck that’s driven three times a week to deliver cargo across town.

Maintain your oil–flow system by monitoring the filtration and seals to ensure that they work during the course of an oil change interval. Poor filtration can have a negative effect on your engine. Because oil filters keep contaminants out of your oil, they must have the space to hold dirt and grime that enters your engine’s compartment before your next oil change.

Temperatures effect on oil life and quality

High temperatures can have a negative impact on oil quality and damage the engine by not providing adequate lubrication. For example, when a truck drives for several days during a heat wave, the oil loses its thickness. It then acts less like a lubricant and more like water within the engine. Thermal distress on an oil supply can also cause dangerous chemical reactions within the oil, such as oxidization, which shortens the duration of your oil change interval.