Maintenance Check for High-Mileage Vehicles

Older cars do not usually fail all at once. A valve cover gasket seeps for a year before it drips on the exhaust. A coolant hose softens before it splits. A tire loses a pound a week through an old valve stem. None of those set off a dashboard light, and all of them are things a regular look under the hood and under the car can catch while the fix is still small.

What we pay attention to on an older vehicle

The check covers the standard list, and the under-hood and under-chassis visuals do more work on a high-mileage car. The technician looks for oil and coolant residue, checks the condition of the fluids rather than just the levels, and notes anything that looks like it has changed since last time.

• Oil seeps at gaskets and seals
• Coolant level and color; residue at hoses
• Transmission fluid color and smell where checkable
• Brake fluid and power steering fluid
• Belt and hose condition in the under-hood visual
• Air filter, lights, wiper blades, tire pressure
• Battery test at participating locations

How often

The check rides along with each full-service oil change. AAA notes that many modern engines on synthetic oil go 5,000 to 7,500 miles between changes, older engines and conventional oil closer to 3,000 to 5,000, and that the owner's manual sets the number. A high-mileage car that burns or seeps a little oil benefits from the shorter end, which also means a more frequent look.

Straight answers, your decision

You stay with the car in the bay. If we see something, you see it too, and you hear plainly what it usually means and whether it is something we do in the bay or something for a repair shop. On an older car, plenty of findings are "watch it" items rather than "fix it now" ones, and we say which is which. Nothing is done without your okay.

High mileage in a high-desert climate

Older rubber and plastic parts age faster in heat and dry air. Reno sees about 65 days a year at 90 F or hotter and only about 7.4 inches of precipitation (NOAA 1991-2020 normals), and then about 122 freezing nights. Belts, hoses and seals take those swings year after year. A regular look is the most practical defense an older car has.