5 Maintenance Checks That Should Be Done During an Oil Change
August 29, 2026
An oil change is one of the most frequent services a vehicle receives, which makes it a practical opportunity to check other systems for developing wear. Fresh engine oil protects internal parts, but it cannot prevent trouble caused by a low tire, coolant leak, worn belt, weak battery, or damaged brake component.
A useful oil change visit should include more than draining oil and installing a new filter. These five maintenance checks can identify concerns early, help protect reliability, and give drivers a clearer understanding of what their vehicle may need next.
1. Check All Fluid Levels And Look For Leaks
Engine oil is only one of several fluids required for safe operation. During an oil change, technicians should check coolant, brake fluid, transmission fluid when the design permits, power steering fluid on equipped vehicles, and windshield washer fluid.
A low fluid level usually has a cause. Engine oil may be leaking externally or being consumed internally. Coolant loss may come from a hose, water pump, radiator, thermostat housing, reservoir, or another connection. Low brake fluid can result from normal brake pad wear, but it can also indicate a hydraulic leak.
Technicians should look around pans, seals, hoses, fittings, reservoirs, and the underside of the vehicle for fresh fluid. Dried residue can also reveal a slow leak that is not leaving a puddle. Fluid color alone does not confirm condition, and topping off a low system does not replace finding the source of repeated loss.
2. Inspect Tires And Set The Correct Pressure
Tire pressure affects traction, braking, steering response, fuel economy, and tread life. Pressure should be checked when the tires are as close to cold as practical and adjusted to the specification on the driver’s door placard.
The inspection should include all four tires and the spare when accessible. Technicians should look for uneven wear, punctures, cracking, bulges, exposed cords, and objects lodged in the tread. Tread depth should be measured at several points because one shoulder may be far more worn than the center.
Common wear patterns provide useful information:
- Wear on both shoulders can indicate prolonged underinflation
- Center wear can result from excessive pressure
- One-sided wear may point toward alignment or suspension trouble
- Cupping can develop from weak shocks, struts, imbalance, or looseness
- Feathering often appears when toe alignment is incorrect
Rotating the tires at the proper interval helps keep tread wear more even, but rotation does not correct damaged suspension parts or alignment concerns. An inspection should identify those causes before another tire is affected.
3. Review Brakes And Visible Suspension Parts
An oil change often places the vehicle on a lift, providing access to brake, steering, and suspension components that are difficult to see from the ground. Technicians can check visible brake pad thickness, rotor condition, hydraulic hoses, calipers, and signs of fluid leakage.
Brake noise is not the only reason to inspect the system. A sticking caliper may wear one pad much faster than the others without producing an immediate warning. Cracked hoses, corroded lines, and leaking wheel cylinders can weaken hydraulic performance.
The suspension check should include control arm bushings, ball joints, tie rods, sway bar links, shocks, struts, springs, wheel bearings, and CV axle boots where visible. Torn boots can release grease and allow contamination into joints. Loose steering or suspension parts may cause clunking, wandering, vibration, or uneven tire wear.
A complete brake or suspension evaluation may require wheel removal and additional testing, but a routine visual check can reveal concerns that deserve closer attention.
4. Inspect Belts, Hoses, And Cooling System Components
The serpentine belt drives the alternator, A/C compressor, and other accessories. On some engines, it also drives the water pump. A damaged belt can leave the vehicle without charging, power steering assistance, or proper coolant circulation.
Modern belts do not always develop obvious surface cracks. The ribs may become worn, glazed, contaminated, or separated. The tensioner and pulleys should also be checked for weak movement, misalignment, noise, and bearing play.
Cooling system hoses should be checked for swelling, hardening, soft spots, cracks, and leakage near clamps or fittings. Plastic thermostat housings, reservoirs, radiator connections, and quick-connect fittings can weaken after years of heat cycles.
Warning signs include:
- Dried coolant residue
- A sweet odor
- Low coolant
- Belt squeal
- Pulley noise
- Hose swelling
- Cracks near hose ends
- Fluid contamination on the belt
Oil or coolant on a belt can shorten its service life. Replacing the belt without repairing the leak can quickly damage the new part.
5. Test Battery Condition And Check Filters
A battery can continue starting the engine while losing reserve capacity. Testing during an oil change can reveal a weak battery before cold weather, high electrical demand, or a long period of parking leads to a starting problem.
Technicians should inspect the terminals, cables, hold-down, and battery case for corrosion, looseness, swelling, or leakage. A battery test can measure available starting capacity, while charging system checks confirm whether the alternator and connections are maintaining proper voltage.
The engine air filter and cabin air filter should also be reviewed when access is practical. A restricted engine filter can limit airflow under load, while a clogged cabin filter can weaken vent output, slow defrosting, and increase blower noise.
Filters should be replaced according to condition and the vehicle’s schedule, not automatically at every oil change. A proper inspection confirms whether the filter is dirty, damaged, incorrectly installed, or still suitable for continued use.
Use The Oil Change To Plan Future Service
An oil change creates a recurring opportunity to track tire wear, fluid loss, brake condition, battery strength, and aging rubber components. Comparing findings from one visit to the next helps technicians recognize changes before they become urgent.
Regular maintenance should be based on the factory schedule, service history, mileage, age, and current condition. Recommendations should clearly separate work that is due now, repairs affecting safety or reliability, and items that can be monitored.
Get Oil Change And Maintenance Checks In Albert Lea, MN, With Collins Auto Repair
Collins Auto Repair in Albert Lea, Minnesota, can replace your engine oil and filter while checking fluids, tires, brakes, suspension, belts, hoses, battery condition, and filters.

