Change it when your vehicle's maintenance schedule requires it, taking both time and mileage into account. The correct oil and replacement interval depend on the engine and the manufacturer's required specification.
Key points
- Check the vehicle manual, service history or maintenance indicator.
- Do not use just any oil: it must meet the engine's specification.
- Low oil level and worn-out oil are different problems.
- The filter is considered as part of the oil-change service.
The correct interval: time and mileage
Oil lubricates, cleans, helps control temperature and protects internal engine components. It loses its properties with use and time, so maintenance schedules usually set both a time limit and a mileage limit: follow whichever applies first according to the vehicle instructions.
Spain's DGT advises following the manufacturer's oil-change instructions. Generic intervals can offer only very broad guidance and do not replace the schedule for the particular engine.
Does the way I use my car matter?
Yes. Very short trips, frequent starts, urban driving, dust, demanding temperatures or heavy loads can affect the maintenance conditions specified by the manufacturer. Some manuals distinguish between normal and severe use.
Even if you rarely use your car, time still matters. Low mileage does not mean oil can remain in the engine indefinitely.
Oil level, service reminders and the red warning light
Checking the level helps identify a shortage of lubricant, but a correct level does not prove the oil still has its required properties. Likewise, topping up does not reset the maintenance interval.
A service reminder usually relates to scheduled maintenance. A red oil-pressure warning is different and can signal an urgent lubrication problem: stop safely, switch off the engine and consult the manual or roadside assistance before continuing.
Why the specification matters
Choosing a familiar viscosity is not enough. The lubricant must meet the standards and approvals required for the engine, particularly where emissions-treatment systems, a turbocharger or other specific requirements are involved.
With ReBorn Care, we identify the vehicle, check the applicable specification and plan oil and filter replacement within the agreed maintenance service.
Common questions
Can I rely on mileage alone?
No. The schedule may also include a time limit and specific conditions of use.
If I top up the oil, do I still need to change it?
Yes. Topping up corrects the level but does not replace periodic oil and filter changes.
Are all oils with the same viscosity equivalent?
No. In addition to viscosity, they must meet the specifications and approvals required by the engine.
Sources and technical references
Specific recommendations depend on the vehicle.
Is your maintenance due?
Tell us the model, engine, mileage and last service so we can check the correct oil and maintenance requirements.