7 Signs Your Car Needs an Oil Change Immediately

Z Auto Service

7 Signs Your Car Needs an Oil Change Immediately

If you have a car, you know that you need to keep up with maintenance. It is one of the best ways to ensure your vehicle lasts longer and helps you avoid costly repairs down the road. And, getting your vehicle’s oil changed is one of the fastest ways to make sure that the engine is functioning at peak efficiency.


Why Is Regularly Changing Your Oil Important?

Regularly changing your car’s oil is extremely important. Oil is essential to your vehicle’s engine since it serves as a lubricant, keeps everything cool, eliminates dirt and grime, and helps keep things from wearing out too quickly.

The primary job of motor oil is to reduce friction between moving parts within an engine by creating a thin layer that acts as a barrier between metal surfaces. As a result, your engine runs more smoothly and does not wear out as quickly. It also protects against corrosion (rusting) from moisture getting into places where water should not be in an engine compartment (like between piston rings).

Regular oil changes can help prevent engine failure by removing sludge or contaminants from the engine’s internal parts (like bearings). This will prevent them from being damaged due to friction caused by these pollutants.

What Happens If You Miss Your Oil Change Schedule?

If you have missed your oil change schedule, the risk of engine failure increases. The longer your car runs without an oil change, the more likely it is to suffer from increased wear and tear that can lead to costly repairs down the line. This can be especially true if you drive a diesel or hybrid vehicle, as these engines are more sensitive than those powered by traditional fuel sources.

Furthermore, the longer your car runs without an oil change, the greater its risk of excessive fuel consumption and emissions output. For this and other reasons, including preventing safety risks, like overheating or engine failure from a lack of lubrication, experts strongly advise vehicle owners to undertake regular maintenance.

7 Signs Your Car Needs an Oil Change

Sign 1: Check Engine Light

This is one of the most common signs that your car needs an oil change service. It can mean several things, including a problem with the catalytic converter or oxygen sensor. If you don’t get it checked out by a professional, you could pay for expensive repairs down the line.

Sign 2: Dark, Dirty Oil

Your engine oil should never appear dark or blackish in color because this indicates overheating, damaging components within those areas. Blackish-colored oil suggests that your car is burning too much fuel and not enough air. It can indicate a failed catalytic converter or oxygen sensors responsible for regulating the mixture between fuel and air entering combustion chambers.

Sign 3: Poor Mileage

The fuel economy will significantly suffer if there is not enough lubrication within the cylinder walls. This results in less efficient combustion during firing cycles, which wastes energy while also increasing friction between pistons and cylinders as they move past each other during operation.

Sign 4: Loud, Knocking Noises

An engine that makes loud noises or knocking sounds when accelerating may also be due for maintenance soon. This often indicates worn engine parts or misaligned valves in your car’s pistons, which could mean that it needs an oil change. These noises can lead to serious problems later down the road if left unchecked.

Sign 5: Thick, Dark Smoke in the Tailpipe

Thick, dark smoke comes from the tailpipe when your car is idling or accelerating slowly (like at stoplights). If you notice this while driving, pull over and have someone look at it as soon as possible—it could be a sign that something is burning up inside your engine!

Sign 6: Oily Smell Inside the Car

A strong oil smell (and an oily mess) in your car’s interior means that your vehicle may have an oil leak.

Sign 7: Slow to Accelerate

If your car is slow to accelerate when starting from a stop, it may be time for an oil change. Slow acceleration happens when there is not enough lubrication within the cylinder walls, resulting in less efficient combustion during firing cycles. This wastes energy while increasing friction between pistons and cylinders as they move past each other during operation.

Oil Change

Should You Go to a Car Service for an Oil Change?

You should go to a car service for an oil change because they have the tools and expertise to do the job correctly. Car repair shops like Z Auto Service have trained mechanics who know how to inspect your engine and change its fluids properly. They also use specialized equipment designed specifically for car maintenance and repair. 

A DIY oil change may seem like it would be cheaper. Still, if you get stuck in the middle of something or if you are not sure which filter is right for your car’s specifications (or what type of filter even needs changing), it may only end up being more expensive and time-consuming than just going to a regular auto shop.

Generally, you should only change your vehicle’s oil yourself if you are familiar with car maintenance or have had experience doing DIY projects. It’s not worth the risk of putting in the wrong oil filter in your car, so if you’re unsure of the kind of filter you need, you’d better take it in for auto service.


Changing your oil is vital for two reasons. First, it keeps your engine running smoothly and prevents costly repairs down the road. Second, you could suffer from a terrible engine breakdown if you don’t change your oil on time. As long as you watch for these signs, changing your oil every three months will become part of your routine.

Your engine is a complicated machine, so you will want to give it all the attention it needs. Call Z Auto Service today if you need help with your car. We are a full-service auto repair shop based in Englewood, CO. We provide expert services for all makes and models of vehicles, including oil changes, tune-ups, and much more. For more information about our auto services, visit us at www.zautorepair.com or call us today at (303) 781-2855.

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