Georgia summers are relentless. Marietta regularly sees temperatures above 95°F from June through August, and that heat is hard on virtually every system in your vehicle. A little preparation in the spring can prevent a breakdown on I-75 in July.
Cooling System: Your Engine's First Line of Defense
The cooling system is the most critical system to check before summer. It keeps your engine operating within its designed temperature range — typically 195–220°F — even when the ambient temperature is pushing 100°F.
Check the coolant level and condition. The coolant reservoir is usually a translucent plastic tank near the radiator. The level should be between the MIN and MAX marks. If the coolant looks brown or rusty rather than green, orange, or pink, it's overdue for a flush.
Inspect hoses and the radiator cap. Squeeze the upper and lower radiator hoses — they should feel firm but pliable. Soft, spongy, or cracked hoses are a failure waiting to happen. A weak radiator cap that can't maintain system pressure will cause the coolant to boil at a lower temperature.
Consider a coolant flush. Most manufacturers recommend flushing the cooling system every 30,000–50,000 miles or every 2–5 years. Old coolant loses its corrosion inhibitors and becomes acidic, attacking aluminum components from the inside.
Air Conditioning: More Than Comfort
A/C isn't just about comfort in a Georgia summer — it's a safety issue. Heat exhaustion can set in quickly in a vehicle with no cooling, especially for children and elderly passengers.
Signs your A/C needs attention:
The most common cause of A/C failure is a refrigerant leak. Our technicians can pressure-test the system, identify leaks, and recharge the refrigerant to restore full cooling capacity.
Battery: Heat Is the Real Enemy
Most drivers think cold weather kills batteries, but heat actually does more long-term damage. High temperatures accelerate the chemical reactions inside the battery, causing the internal plates to corrode faster and the electrolyte to evaporate.
If your battery is more than 3 years old, have it load-tested before summer. A battery that passes a simple voltage test can still fail under the load of starting a hot engine with the A/C compressor engaged.
Tires: Check Pressure More Frequently
Tire pressure increases roughly 1 PSI for every 10°F rise in temperature. A tire that was at the correct pressure on a 60°F spring morning will be overinflated on a 95°F summer afternoon. Overinflated tires wear faster in the center and have reduced contact with the road.
Check tire pressure in the morning before the car has been driven, and refer to the sticker inside the driver's door jamb for the correct specification — not the maximum pressure printed on the tire sidewall.
Belts and Hoses: Heat Accelerates Wear
Serpentine belts and coolant hoses are made of rubber compounds that degrade with heat and age. A belt that looks fine at 60°F may crack and snap on a 100°F day. Inspect belts for cracking, fraying, or glazing. Most serpentine belts should be replaced every 60,000–100,000 miles.
The Quick Summer Prep Checklist
| System | What to Check | Action if Needed |
|---|---|---|
| Coolant | Level, color, hose condition | Flush or top off |
| A/C | Cooling performance, compressor noise | Recharge or repair leak |
| Battery | Age, load test result | Replace if 3+ years old |
| Tires | Pressure, tread depth | Inflate to spec, rotate |
| Belts | Cracking, fraying, tension | Replace if worn |
| Wipers | Streak-free operation | Replace blades |
| Cabin air filter | Restriction level | Replace if dirty |
Schedule your summer prep at Advantage Auto Service — call (770) 951-8055 or book online. We're at 1775 Cobb Pkwy SE, Marietta, GA 30060.