An oil service is one of the most common forms of car maintenance, but it is easy to think of it as simply draining old oil and pouring in new oil.
In reality, a proper oil service should involve more than that. The correct engine oil, a suitable oil filter and basic checks around the engine can all make a difference to how well the vehicle is maintained.
For drivers who deal with heavy traffic, frequent short trips or regular interstate journeys, keeping up with oil servicing is particularly important.
What is an oil service?
An oil service is routine vehicle maintenance that normally involves replacing the old engine oil with the correct fresh oil and replacing or checking the oil filter.
The engine oil lubricates moving components inside the engine, helping reduce friction and heat while carrying contaminants away from important components.
As the vehicle is driven, the oil gradually becomes contaminated and its condition changes. Following the manufacturer’s recommended service schedule helps ensure the engine continues to receive the lubrication it needs.
What is included in an oil service?
The exact process depends on the vehicle and the workshop, but a proper oil service commonly includes:
- Draining the old engine oil
- Replacing the oil filter
- Filling the engine with the correct oil
- Checking the final oil level
- Checking for leaks
- Inspecting the oil drain plug and seal
- Checking relevant fluid levels
- Inspecting visible engine components
Some workshops may also carry out a basic vehicle inspection while the car is being serviced.
The important thing is to confirm what is included before agreeing to the service.
How often should you have an oil service?
There is no single oil-change interval that applies to every vehicle.
The correct interval depends on factors such as the vehicle, engine, oil specification, age, mileage and driving conditions. Your owner’s manual or manufacturer service schedule should be the starting point.
A vehicle that spends most of its time crawling through traffic may experience different operating conditions from one that regularly travels long distances at steady speeds.
If you frequently drive short distances, spend long periods idling or regularly operate the vehicle under demanding conditions, discuss the appropriate service interval with a qualified technician rather than simply choosing an interval based on another car.
What happens if you delay an oil service?
Old or unsuitable engine oil can become less effective at protecting the engine.
Ignoring scheduled oil maintenance for too long can contribute to increased engine wear, deposits and other problems.
You may eventually notice symptoms such as:
- Noisy engine operation
- Rough running
- Reduced performance
- Increased oil consumption
- Oil warning lights
- Unusual engine smells
- Oil leaks
These symptoms can have several possible causes, so they should not automatically be blamed on old engine oil.
Does an oil service include an oil filter change?
A proper oil service will commonly include replacing the oil filter, although the exact package depends on the service provider.
The oil filter helps remove contaminants from the engine oil. Installing fresh oil while leaving an old, heavily contaminated filter in place may undermine the purpose of the service.
The replacement filter should also be suitable for the specific vehicle.
How do you choose the right engine oil?
Do not choose engine oil simply because the brand is popular or because another vehicle uses the same product.
Engine oils have different viscosity grades and specifications. Your vehicle manufacturer specifies the requirements that the oil needs to meet.
For example, you may see grades written as 5W-30, 5W-40 or 10W-40. These numbers describe the oil’s viscosity characteristics, but the viscosity alone does not tell you whether the oil is correct for your particular engine.
Always check the vehicle’s recommended specification.
Does engine oil need to be changed if the car is rarely driven?
Yes, mileage is not the only consideration.
Engine oil can deteriorate over time, and a vehicle that sits for long periods can still require servicing according to its manufacturer’s time-based schedule.
This is especially relevant if you use a car occasionally for airport trips, weekend journeys or occasional interstate travel.
Before taking a vehicle that has been sitting unused for a long period on a long journey, check its oil level and general condition and make sure its scheduled maintenance is up to date.
Oil service in heavy traffic
Driving in busy city traffic can mean spending considerable time stopping, starting and idling.
If your vehicle is regularly used in these conditions, it is important to follow the appropriate maintenance schedule rather than assuming that low mileage automatically means low engine stress.
This is particularly relevant for people who use their vehicles every day for commuting, deliveries, business activities or transport services.
What should you check after an oil service?
Before leaving the workshop, make sure the vehicle has been checked properly.
The technician should verify the oil level and check for obvious leaks around the filter and drain plug.
It is also worth checking that:
- The correct oil was used
- The oil filter was replaced if included
- The oil filler cap is properly fitted
- There are no visible leaks
- The service indicator has been handled where appropriate
- Your next service requirement has been recorded
Keep the service receipt or record. A consistent maintenance history can also be useful when selling the vehicle later.
Can you change engine oil yourself?
It is technically possible for an experienced vehicle owner to change engine oil, but it needs to be done correctly.
You need the correct oil, filter, tools and a safe way to access the drain point. Used engine oil also needs to be collected and disposed of responsibly.
If you are unsure about the correct oil specification or do not have the appropriate equipment, using a qualified service provider can reduce the risk of mistakes.
Oil service vs full car service
An oil service is not necessarily the same thing as a full vehicle service.
An oil service primarily focuses on engine oil and the oil filter, together with relevant basic checks.
A full service may involve broader inspections covering areas such as:
- Brakes
- Tyres
- Battery
- Suspension
- Lights
- Air filter
- Engine components
- Fluid levels
- Vehicle electronics
The exact contents depend on the vehicle and service package.
If your car is due for a major scheduled service, an oil change alone may not be enough.
Why you should not ignore the oil warning light
An oil service reminder and an oil pressure warning are not necessarily the same thing.
If an oil pressure warning light comes on while driving, do not simply assume that the vehicle is due for a routine oil change.
A low oil pressure warning can indicate a potentially serious engine problem. Safely stopping the vehicle and checking the situation is more important than continuing to drive until you reach a workshop.
If the warning remains on, professional diagnosis may be required.
Oil service before a long journey
Before travelling between cities, especially on a long interstate journey, an oil check is one of several useful maintenance steps.
Check the oil level, tyres, coolant, brakes, battery and lights before leaving.
If your service is already due, it is better to deal with it before the journey rather than discovering a maintenance problem halfway through the trip.
This is particularly important for drivers who depend on their vehicles for business, deliveries or regular long-distance travel.
How Travo.ng fits into your travel plans
Vehicle maintenance can affect travel schedules, airport trips, business deliveries and interstate journeys.
Travo.ng provides travel, transport and logistics support, helping customers coordinate movement when they need to get from one place to another.
Keeping your vehicle properly serviced also makes travel planning easier because routine maintenance can reduce the chances of avoidable vehicle problems disrupting your plans.
An oil service may seem like a small maintenance job, but it is an important part of looking after your engine. Use the correct oil specification, replace the filter when required, follow the appropriate service schedule and investigate warning lights rather than simply resetting them.
