Preventative maintenance tips for trucks
Preventive maintenance is essential for effective fleet management. Regular inspections and scheduled upkeep reduce repair costs, extend truck lifespan, and ensure safety and compliance. Implementing a structured preventive maintenance program keeps trucks operational and reliable.

1. Check Engine Oil Levels
Engine oil lubricates moving parts, prevents overheating, and removes contaminants. Low oil increases friction, accelerating wear and risking engine failure. Poor oil maintenance can also reduce fuel efficiency by about 0.4 mpg.
Maintenance tip: Check oil weekly with the engine off on level ground. Look for discoloration or contamination, and change oil per manufacturer guidelines or sooner under heavy-duty conditions.
2. Check and Change Other Fluids
Multiple fluids are critical to truck performance and safety:
- Coolant: Prevents overheating, freezing, and corrosion.
- Transmission fluid: Ensures smooth shifting and prevents wear.
- Brake fluid: Maintains braking efficiency.
- Power steering fluid: Supports responsive steering.
Check fluid levels weekly and perform complete flushes as scheduled. Replace fluids showing contamination, discoloration, or unusual odors.
3. Check Tire Pressure
Tire pressure affects safety, fuel efficiency, and tire lifespan. Incorrect pressure can lead to blowouts, reduced traction, or uneven wear.
Tip: Inspect tires when cold using a reliable gauge. Maintain pressure per manufacturer specifications, adjusting for load.
4. Check and Rotate Tires
Tire condition impacts safety and handling. Rotate tires regularly to ensure even wear, extend life, and maintain performance. Inspect for cuts, bulges, embedded objects, and measure tread depth. Replace tires that meet minimum tread standards or are damaged.
5. Inspect Air Filters
Air filters protect engines and influence fuel efficiency and emissions. Clogged filters can increase fuel consumption by up to 10% and reduce power.
Tip: Inspect filters monthly (or more in dusty environments). Replace if light cannot pass through and clean the housing during replacement.
6. Check Brakes
Brake maintenance ensures safety and prevents costly repairs. Inspect:
- Pads/shoes for wear.
- Rotors/drums for damage.
- Brake lines/hoses for leaks.
- Component adjustments and ABS functionality.
Address issues immediately to avoid safety hazards and comply with regulations.
7. Check Windshield Wipers and Fluid
Clear visibility is vital in all weather conditions. Replace worn blades and refill washer fluid with the appropriate solution for your climate. Test wipers regularly.
8. Inspect Glass for Chips and Cracks
Windshield integrity affects safety and compliance. Inspect weekly, repair small chips promptly, and replace cracked glass in the driver’s line of sight.
9. Check Exterior and Interior Lighting
Functional lights ensure visibility, communication, and regulatory compliance. Inspect:
- Headlights (high/low beam).
- Tail and brake lights.
- Turn signals and hazard lights.
- Marker lights, reflectors, and interior lighting.
Replace bulbs showing dimming and clean covers to maintain brightness.
10. Perform a Battery Load Test
Battery health is crucial for starting reliability and electrical system function. Test batteries quarterly or if starting problems arise. Clean terminals and check charging system output to prevent breakdowns.
11. Check Steering and Suspension
These systems affect safety, handling, and driver comfort. Inspect monthly:
- Steering linkage for play or damage.
- Power steering for leaks/noises.
- Suspension components for wear.
- CV and universal joints.
- Shocks/struts for leaks or degradation.
Prompt maintenance prevents tire wear and ensures control.
12. Check Truck Cab for Safety and Comfort
Cab inspections support driver productivity, safety, and compliance. Check:
- Seat belts and restraint systems
- HVAC system
- Mirrors and adjustment mechanisms
- Safety equipment (fire extinguishers)
- Auxiliary systems and controls
Document inspections as part of preventive maintenance to maintain operational efficiency and support driver retention. In addition, investing in trailer wall panels from Glasteel, ensures cargo protection, durability, and reduced maintenance costs over the life of your fleet.

Reviewed by Yaiser Rodríguez
on
octubre 16, 2025
Rating: 5

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