Top 5 DIY Maintenance Tips for Semi-Trucks

Nov 15, 2025

Inspecting and Maintaining Tires

One of the most critical aspects of semi-truck maintenance is tire care. Regularly checking tire pressure can prevent blowouts and improve fuel efficiency. Use a quality tire gauge to ensure all tires are inflated to the manufacturer’s recommended pressure. Under-inflated tires can lead to increased wear and tear, while over-inflated tires can cause reduced traction.

Additionally, inspect tires for any signs of damage, such as cuts, punctures, or uneven tread wear. Rotate your tires every 6,000 to 8,000 miles to ensure even wear and extend their lifespan.

semi-truck tires

Regular Oil Changes

Oil changes are essential for the smooth operation of your semi-truck’s engine. Regularly changing the oil and oil filter helps remove contaminants and ensures the engine runs efficiently. It's advisable to change the oil every 25,000 to 30,000 miles or as recommended by the manufacturer. Keeping a maintenance log can help track when the next oil change is due.

Using the right type of oil is equally important. Consult the truck’s manual or a professional mechanic to determine the best oil for your vehicle based on the engine type and operating conditions.

engine oil change

Brake System Checks

The brake system is vital for safety, making its maintenance indispensable. Regularly inspect the brake pads and discs for signs of wear and tear. Listen for unusual noises such as squeaking or grinding when applying brakes, as these can indicate issues that need immediate attention.

Check brake fluid levels regularly. Low fluid levels can lead to decreased braking performance, so ensure the reservoir is topped up with the correct type of brake fluid.

Electrical System Evaluation

A well-functioning electrical system is crucial for the operation of lights, gauges, and other electronic components. Regularly inspect the battery and clean any corrosion from the terminals. Ensure that all connections are tight and secure.

Check all lights, including headlights, taillights, and indicators, to ensure they are functioning correctly. Replace any burnt-out bulbs immediately to maintain safety standards.

truck electrical check

Air Filter Replacement

The air filter plays a key role in maintaining engine performance by preventing dust and debris from entering the engine. Over time, the air filter can become clogged, reducing airflow and efficiency. Check the air filter regularly and replace it every 15,000 to 30,000 miles, or more frequently in dusty conditions.

Replacing the air filter is a simple task that can enhance engine performance and fuel economy. A clean filter ensures optimal air intake, contributing to the longevity of the engine.

By following these DIY maintenance tips, semi-truck owners can ensure their vehicles operate efficiently and safely, reducing the risk of breakdowns and costly repairs. Regular maintenance not only extends the life of the truck but also enhances its performance and reliability.