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Summer Maintenance Checklist for Used Vehicles

Blog Aug 28th, 2026
A man checks the engine oil of a used vehicle.

While buying a used vehicle can save you money upfront, it’s important to perform regular maintenance on the vehicle to avoid issues arising that can become costly to repair. With summer in full swing, it’s the perfect time to check on and perform certain maintenance work, including checking your tires, keeping your cooling system running smoothly, topping up on fluids, and testing the battery. Read on as our team at Whiteoak Lincoln has prepared this helpful summer maintenance checklist to keep your used vehicle in peak operating condition, and visit our team in Mississauga for assistance getting your vehicle serviced, or to buy your next used vehicle today!

Tire and Wheel Summer Maintenance

The first thing to do in the summer is check your tire pressure, as hot pavement can change the PSI in your tires. Check the pressure every month, and check at least once for tread depth so you’re prepared to take on summer rain as well. If you notice any cracks or bulges on the sidewalls, it might be time for new tires, as this is a sign that they might have structural issues that can lead to blown tires.

A used vehicle owner puts on new windshield wipers.

Cooling System Summer Maintenance

It gets pretty hot in Mississauga in the summer, so make sure your climate control system is ready to handle many days of use. First, make sure the coolant level exists between MIN and MAX, and that it isn’t dirty or degraded. Test the air conditioning system for speed and airflow as well, keeping an ear open for any clunking noises as it runs as this indicates the compressor in the AC unit needs fixing.

Fluid Level Summer Maintenance

In the summer, both you and your vehicle need to stay hydrated, so keep its fluid levels topped up! While checking your coolant level, take a peek at the engine oil as well. If you’re near the changing range for the type of oil you use (every 5,000 to 7,500 kilometres for regular oil, every 7,500 to 10,000 kilometres for synthetic-blend oil, and every 10,000 to 15,000 kilometres for fully synthetic oil), now’s the time to do so. Other fluid levels to top off in the summer include your brake, transmission, and windshield washer fluid, but only if they need it.

Battery Summer Maintenance

Us Canadians know all too well that winters can drain a car’s battery quickly, but so too does weather on the opposite extreme. Hot, humid weather can also drain a car’s battery, so take the time to get it tested to ensure it’s able to hold a good charge. While testing, check for any terminal corrosion too, as leaking acid is a clear sign that it’s time for a new battery.

Get Your Used Vehicle at Whiteoak Lincoln in Mississauga, ON

Our pre-owned inventory at Whiteoak Lincoln is the best place to get a summer-ready used vehicle! Visit us in Mississauga to buy, and if you need help maintaining your vehicle, the trained technicians in both our Service Department and Quick Lane are ready to help. Reach out to us if you have any questions about vehicle maintenance, or about our current inventory of vehicles!

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With a wealth of experience in the automotive industry, the highly skilled team at Black Rock Digital possesses a deep understanding of the field... Our track record includes successful collaborations with top brands and dealerships, allowing us to gain invaluable insights and expertise. Our comprehensive range of services includes brand positioning, market research, digital advertising, content creation, social media management, website copywriting, and the development of technical car review pages.

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Whiteoak LincolnBlogSummer Maintenance Checklist for Used Vehicles