High temperatures can strain your vehicle. Heat causes fluids to evaporate, reduces circulation, and shortens battery and tire life. Protect your vehicle by checking fluids, maintaining your battery, and keeping your tires at the right pressure.
Why Heat Matters
As temperatures rise, your vehicle works harder. Fluids evaporate faster, batteries degrade, and tires wear unevenly. Preparing your vehicle for the heat reduces breakdowns and keeps you safe on the road.
Batteries
Summer can be hard on batteries. Watch for these risks:
Evaporation - Heat evaporates water and sulfuric acid inside the battery, leading to failure.
Corrosion - High heat and liquid evaporation accelerate natural battery corrosion and oxidation.
Sulfation - Heat accelerates lead sulfate buildup on battery plates, reducing performance.
Overcharging - Heat can affect charging systems, shortening battery life by overcharging it.
Solutions
Park in a garage or shade when possible.
Use a UV-protective car cover.
Inspect battery terminals for corrosion; clean or replace them as needed.
Stay current with radiator maintenance flushes.
Check water level indicators if your battery has them.
Tires
Heat affects tire pressure and increases the risk of a blowout.
Check air pressure before driving.
On long trips, re-check every 75 miles if over-inflation is a concern.
Avoid thin or worn tires. Consider summer tires for better hot-weather performance, especially in highly seasonal climates.
Fluids
Engine Oil
Heat can thin your oil, reducing lubrication.
Check your oil level regularly.
Change oil according to your manufacturer’s schedule.
Consider high-temperature or synthetic oil if you frequently drive in heat.
Coolant
Coolant prevents engine overheating.
Check levels before long drives or during heat waves.
Flush and replace coolant as recommended by your mechanic.
Ensure your radiator cap and hoses are in good condition.
Transmission Fluid
Transmission fluid keeps gears cool and lubricated.
Heat can break down fluid faster, causing wear.
Check levels and condition regularly.
Replace fluid based on manufacturer recommendations or if it looks dark/burned.
Summer Fluid Tips
Check all fluid levels before each long trip.
Inspect for leaks or cracks in hoses.
Stay ahead of maintenance schedules—summer heat accelerates wear.