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Car oil change: when to do it

Complete guide to the ideal frequency, warning signs, and how to perform proper engine maintenance.

⚪ Intermediate Estimated time 15 minutes Step by step 5 steps

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Changing the engine oil is one of the most important maintenance procedures for ensuring vehicle performance and service life. Oil acts as a lubricant, protecting internal engine components against friction, controlling temperature, and minimizing wear. However, the frequency and conditions for replacement depend on factors such as the type of oil used, the vehicle model, and operating conditions.

Why is changing the oil so important?

Engine oil performs critical functions in vehicle operation: lubrication, temperature control, corrosion protection, and internal cleaning. Over time, the oil loses its properties because of degradation caused by heat, particle contamination, and exposure to moisture.

Problems caused by not changing the oil

Ignoring regular oil changes can lead to serious engine damage, such as increased internal friction, overheating, sludge formation, and premature component wear. In extreme cases, inadequate lubrication may require engine rebuilding or complete replacement, with high costs.

Step-by-step guide to changing the oil

Detailed procedure for performing maintenance correctly

  1. 1

    Consult the owner's manual

    Check the recommended intervals for the vehicle model.

  2. 2

    Prepare the vehicle

    Park on a level surface and turn off the engine. Warm it slightly to make oil drainage easier.

  3. 3

    Drain the old oil

    Use the drain plug to remove the used oil, collecting it in an appropriate container.

  4. 4

    Replace the oil filter

    Replace the filter with proper sealing, ensuring it is clean and compatible with the model.

  5. 5

    Add the new oil

    Use the type and quantity recommended in the manual. Avoid mixing oils with different specifications.

Recommended oil change intervals

Based on the type of oil used
Oil type Recommended interval
Mineral oil 5,000 km or 6 months
Semi-synthetic oil 7,500 km or 6 months
Synthetic oil 10,000 km or 12 months

Important Tips

Do not mix different oils: Combining different viscosities or specifications can compromise lubrication.

Always replace the filter: A saturated filter reduces lubrication system efficiency.

Check the level with the engine cold: The reading is more accurate when the engine is off and the vehicle is on a level surface.

Frequently asked questions

Quick answers to common questions.

When should I change the car's oil?

Oil change frequency depends on the type of oil used, the vehicle model, and operating conditions. The owner's manual defines the recommended intervals, generally based on mileage or time.

Does oil color indicate when it needs to be changed?

Oil color is not a reliable indicator. Viscosity and the presence of residue are more important. Following the manual's recommendations is the safest practice.

What is the function of the oil filter?

The oil filter retains metal particles and impurities, keeping the lubrication system clean. It is essential to replace it together with the oil to ensure engine efficiency.

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