Possible causes
Short trips and traffic jams
When the engine does not have time to warm up, moisture and fuel collect in the oil. The mileage is low, but the oil ages faster. That is why the time since the last change also counts.
Consumption and top-ups
Topping up does not replace an oil change: fresh oil mixes with the old. Noticeable consumption is a reason to check the engine.
Viscosity and approval
Oil is chosen by the engine manufacturer's approval, not just its viscosity. The wrong oil can affect engine systems and the turbocharger.
What to tell the mechanic
- The mileage and date of the last oil and filter change.
- The make, model, engine and year of the car.
- Whether you have topped up between changes, and how much.
What you can do
Check the oil level on the dipstick every few weeks and before long journeys. The oil filter is usually changed with the oil, and the air and cabin filters according to the schedule.
Where the check starts
The mechanic finds the exact cause during the inspection.
Frequently asked questions
If I drive little, can I change the oil once a year or less often?
Many manufacturers also limit the interval by time. Oil ages even with low mileage, especially on short trips.
Should the engine be flushed during a change?
With regular changes using the right oil, flushing is usually not needed. The decision depends on the condition of the engine and the oil.