Check Your Coolant
The cooling system is your engine's primary defence against summer heat, and low or degraded coolant is the most common reason vehicles overheat on hot days. Coolant doesn't just prevent freezing in winter, it also raises the boiling point of the fluid in the system, allowing the engine to run at normal operating temperature even when the outside air is hot.
Check the coolant level in the reservoir when the engine is cold. If it's below the minimum mark, top it up. If the fluid looks brown, cloudy, or has visible debris floating in it, it's overdue for a flush.
Dirty coolant loses its corrosion-inhibiting properties and doesn't transfer heat as effectively as fresh fluid. Most manufacturers recommend a coolant flush every five years or 160,000 kilometres, but checking its condition annually is good practice.
Also, inspect the coolant hoses for cracks, soft spots, or swelling. Summer heat accelerates rubber degradation, and a burst hose can bring a functioning cooling system to a stop within minutes.
Check Your Oil
Engine oil does more than lubricate. It also helps transfer heat away from engine components. Clean, fresh oil disperses heat more effectively than old, degraded oil, and dirty oil increases friction, which generates more heat in the first place. If you're approaching your oil change interval as summer arrives, getting it done before the hottest months is worthwhile.
Check the oil level with the dipstick and look at the condition of the cloth when you wipe it. Dark brown to black oil is a sign it's due for a change. Fresh oil is amber or light brown.
If you're not sure which grade your Chevrolet requires, check the owner's manual, as using the correct viscosity rating matters for both protection and fuel economy. Or our team at Barry Cullen Chevrolet is more than happy to check out your vehicle.
Test Your Battery
It's counterintuitive, but heat is actually harder on car batteries than the cold. High temperatures accelerate internal corrosion and cause the electrolyte solution inside the battery to evaporate faster, shortening its life. Batteries that have been weakened by summer heat are often the ones that fail to start on a cold October morning.
If your battery is three years old or more, have it tested before the summer driving season begins. Also check the terminals for white or green corrosion buildup. This reduces the electrical connection quality and is easy to clean. If the battery case appears bloated or misshapen, replace it promptly.
Check Your Tires
Air pressure inside tires increases with temperature. Roughly 1 PSI for every 5°C rise in ambient temperature. On a hot Guelph summer day, tires that were properly inflated in the spring could be overinflated by several PSI, affecting handling, braking, and increasing the risk of a blowout on hot pavement.
Check your tire pressure before driving when the tires are cold. Adjust to the vehicle manufacturer's recommended pressure found on the label inside the driver's door jamb.
Also, inspect the tread depth. Tires wear faster on hot asphalt, and worn tires handle emergency braking situations significantly worse. If the tread is at or below 3mm, it's time to plan for replacement before summer driving puts maximum stress on them.
Service Your Air Conditioning
If your A/C is blowing cool rather than cold, or if it takes longer than usual to cool down the cabin, a refrigerant check is in order.
Have the system inspected before the hottest weeks arrive rather than discovering the problem when you need it most. A recharge restores performance quickly, but if there's a leak, finding and fixing it first prevents the same issue returning in a few months.
Replace Your Wiper Blades
Rubber wiper blades degrade in UV exposure, and wiper blades that made it through a Guelph winter are often ready for replacement by summer. Summer brings its own demand for wipers with heavy afternoon thunderstorms, bug accumulation on the windshield, and road spray. If your wipers are streaking, skipping, or chattering across the glass, replace them before you need them in a downpour.
Book Regular Service Inspections at Barry Cullen Chevrolet in Guelph, ON
A professional inspection at the start of summer catches things that are easy to miss during a visual check at home. Our service team at Barry Cullen Chevrolet can go through the full summer readiness checklist and make sure your vehicle is prepared for whatever the season brings. We’re proud to serve drivers in Guelph and the surrounding area. Book your appointment online or give us a call at 519-824-0210 today!
