What is the role of the oil filter and why is it replaced?

Contents

• What is the function of the oil filter?
• Why and when is it replaced?
• Signs of clogging

Every car needs regular care, but one of the most frequently neglected parts that plays a key role in the engine's health is the oil filter. Although small in appearance, it is of great importance for the efficient operation of the engine and its long-term protection from contaminants and damage. Without proper oil filtration, even the most powerful engine can suffer serious harm.

What is the function of the oil filter?

The oil filter has one main task – to clean the oil that circulates in the engine. It passes through the filter and is freed from particles, sludge and metal shavings. This provides:

• optimal engine protection – prevents wear of internal parts;
• smooth operation – the lubricant lubricates the engine parts evenly and efficiently;
• extended component life – avoids wear caused by friction from hard contaminants.

You also get better fuel efficiency because the engine parts do not operate under additional stress caused by friction.

Why and when is it replaced?

Regular replacement of the oil filter is an important part of any car's maintenance. It is usually done together with the oil change. If this is not done, the overall efficiency of the filter drops sharply, and contaminants begin to circulate back into the engine. Recommended service intervals vary for different types of cars, but are usually:

• every 10,000 – 15,000 km – under normal driving, approximately 10,000 km for petrol engines and about 15,000 km for diesel engines;
• more frequently when driving in extreme conditions – this includes dusty roads or very high temperatures.

It is recommended to replace the filter with every oil change, even if you have not reached the stated mileage.

Signs of clogging

If the oil filter is worn or clogged, the engine will start to show signs. It's good to watch for the following symptoms and respond if they appear:

• warning light on the dashboard;
• noisy engine operation;
• unusual sounds, especially knocking;
• reduced power and slower acceleration;
• exhaust contamination or black smoke coming from it;
• presence of sludge when inspecting the drained oil.

Replacing the oil filter is not complicated, but it requires the correct selection of components and proper installation. If you are not sure, trust an experienced car service like OnDrive, where you will receive comprehensive maintenance and professional service with a warranty.

Take care of your engine – this way you'll enjoy lower fuel consumption, less noise and a longer vehicle life. And most importantly – you'll be reassured that you've done what is necessary for your safety on the road.