Engine oil plays a critical role in keeping your car running efficiently—it lubricates moving parts, reduces friction, and helps control engine temperature. But over time, oil breaks down and becomes less effective. Driving too long without an oil change can lead to reduced performance or even serious engine damage.
Not sure if your car is due? Here are five telltale signs that it’s time to schedule an oil change.
1. The Oil Looks Dirty or Gritty
Pop the hood and check the dipstick. Clean, healthy oil has a clear amber color, but as it ages, it darkens and can pick up particles and sludge. If the oil on the dipstick looks black or feels gritty to the touch, it’s no longer doing its job properly. Time for a change.
Also take note of the oil level. If it’s running low, it could be a sign of a leak or simply that it’s been too long since your last change.
2. You Hear Strange Engine Noises
Oil lubricates the moving parts of your engine. When it starts to degrade, friction increases. This can lead to unfamiliar sounds—like ticking, knocking, or grinding—especially when starting the car or idling. If your engine suddenly sounds louder than usual, don’t ignore it. Fresh oil may be all it needs to quiet down.
3. You Smell Burning Oil
A burnt oil smell while driving is never a good sign. This can happen if old oil starts to overheat or if there's a leak allowing oil to drip onto hot engine parts. Either way, it’s a red flag that your oil needs to be checked—and likely replaced—right away.
4. Your Car Feels Sluggish
Is your vehicle lagging when you press the gas pedal? Dirty or degraded oil can lead to a sluggish engine response. Without proper lubrication, internal engine components can’t work together as smoothly, which may cause reduced power or slower acceleration. A quick oil change can often fix this.
5. You’re Overdue Based on Mileage
Even if everything feels fine, regular oil changes are essential. Every car manufacturer provides a recommended oil change interval, usually found in your owner’s manual. Depending on the make, model, and oil type, the suggested range may be every 3,000 to 10,000 miles.
Following these guidelines is the best way to avoid unnecessary wear and keep your engine running at its best.