How do I know when my car needs an oil change?
Follow the interval in your owner's manual, or the maintenance reminder on the dash if your vehicle calculates oil life. Those systems track engine load, temperature and driving conditions rather than mileage alone.
Between reminders, check the dipstick. Oil that is dark and gritty on your fingers, or that sits below the low mark, needs attention now regardless of what the counter says.
Conventional, synthetic blend or full synthetic?
Full synthetic oil resists heat and shear better, flows sooner on cold starts, and holds its protective additives longer. Many newer engines, particularly turbocharged ones, require it — using anything else can void coverage and shorten engine life.
Conventional oil is still adequate for some older, simpler engines on shorter intervals. A blend sits between the two. The correct answer is in your owner's manual, and we follow it rather than upselling past it.
What is included
Drain and refill
Old oil drained, correct grade and capacity of new oil installed.
New oil filter
A filter appropriate for the engine, with the drain plug gasket replaced where applicable.
Fluid check and top-off
Coolant, brake, power steering and washer fluid levels checked.
Visual inspection
Belts, hoses, tires, brakes, suspension components and any visible leaks while the vehicle is up.
Reminder reset
Oil life monitor reset so your next interval tracks accurately.
Why the interval matters more than the brand
Oil that stays in an engine too long thickens with soot and oxidizes into deposits. Those deposits restrict oil passages, clog variable valve timing solenoids and, on some engines, starve turbochargers of lubrication.
The repairs that follow are expensive and largely avoidable. Almost every engine we see with sludge damage has a history of stretched oil changes, not a history of the wrong brand of oil.
Low oil between changes
Some consumption is normal, particularly on higher-mileage and direct-injection engines. Losing a quart every few thousand miles is worth monitoring; losing one every few hundred is a problem to investigate.
If your level drops noticeably we look for external leaks first — valve cover gaskets, oil pan, rear main seal, filter housing — then consider internal consumption. Knowing which one it is changes the repair entirely.
What affects oil change cost
Oil type and capacity
A four-cylinder taking five quarts of conventional costs less than a V8 taking eight quarts of full synthetic.
Filter design
Cartridge filters in awkward locations take longer than a spin-on filter.
Extras
A cabin or engine air filter installed at the same visit adds parts but very little labor.
Oil Changes FAQs
- How often should I change my oil?
- Follow the interval in your owner's manual or your vehicle's oil life monitor. Modern engines running full synthetic often go considerably longer than the old 3,000-mile rule, but severe-service driving — short trips, heavy traffic, towing, extreme heat — shortens it.
- Can I switch from conventional to synthetic oil?
- Yes. Switching to synthetic is safe on virtually any engine and does not cause leaks on a healthy one. Going the other direction is only appropriate if your manufacturer permits conventional oil.
- Do you check anything else during an oil change?
- Yes. The vehicle is already on the lift, so we look at tires, brakes, belts, hoses, suspension components and any visible leaks, and tell you what we see.
- What happens if I go too long between oil changes?
- Oil oxidizes and forms deposits that restrict oil flow. Over time that leads to timing component wear, variable valve timing faults, turbo failures and, in severe cases, bearing damage.
Next step: talk to the shop
Auto Pro Services is at 4013 Gallatin Pike, Nashville, TN 37216. Call with your year, make and model and describe what the vehicle is doing — we will tell you what testing is involved before you come in.
Call (615) 753-5150
