Summertime maintenance for fleets

Each season of the year requires a slightly different approach when it comes to performing maintenance on your fleet vehicles. When it comes to summer, hot temperatures can actually wreck havoc on your vehicle. Here’s what you can do to keep your fleet in optimal shape over the summer.

Perform a cooling system check. The summer heat puts extra strain on your vehicles’ cooling systems. Inspect radiator hoses, belts, and coolant levels regularly to prevent overheating. Clean or replace clogged or dirty radiators, and consider flushing and refilling the coolant if necessary.

Take care of your tires. Hot pavement and long trips can lead to increased tire wear and blowouts. Regularly inspect tires for proper tread depth, inflation, and signs of damage. Ensure tire pressures are adjusted to manufacturer-recommended levels, and rotate tires regularly for even wear.

Check and maintain your battery. High temperatures can accelerate battery fluid evaporation and decrease battery life. Inspect and clean battery terminals, ensuring they are corrosion-free. Check battery charge levels and consider testing batteries to identify any potential issues before they become problems.

Make sure your air conditioning is working. A reliable air conditioning system is crucial for driver comfort during scorching summer days. Inspect the A/C system for leaks, check refrigerant levels, and clean or replace cabin air filters. If necessary, recharge the system or seek professional assistance to ensure optimal cooling performance.

Keep an eye on fluid levels. Regularly check fluid levels, including engine oil, transmission fluid, brake fluid, and power steering fluid. Extreme heat can cause fluids to deplete more quickly, so top up as needed and consider regular fluid changes to maintain peak performance.

Inspect your brakes. Heat can accelerate brake wear and reduce braking efficiency. Inspect brake pads, rotors, and brake fluid levels regularly. Look for signs of excessive wear or damage and ensure brakes are properly adjusted for optimal safety.

Maintain your filters. Dirty air filters can reduce engine performance and fuel efficiency. Check and replace air filters as needed to ensure proper airflow and engine protection. Don’t forget about fuel filters as well, as they play a vital role in maintaining optimal engine performance.

Don’t forget the exterior. Summer means more exposure to sunlight, dust, and debris. Regularly wash and wax fleet vehicles to protect the paint from UV rays and keep them looking sharp. Pay attention to headlights, taillights, and indicators, ensuring they are clean and properly functioning.

Remember, proactive maintenance during the summer helps prevent breakdowns, reduces downtime, and extends the lifespan of your fleet vehicles. Regular inspections, timely repairs, and a well-maintained fleet make for more efficient operations.

Fuel up with Quarles year-round with our fleet fueling cards and fuel sites. We carry many different types of fuel at select sites – but either way, you’ll get access to the best quality fuel no matter what. Whether your fleet is big or small, we can help you compete on the road. Visit to learn more about how we can help you.