Changing the oil is one of the most common car maintenance procedures. But many drivers are wondering: what filters need to be changed along with the oil so as not to harm the engine and extend its life? The answer depends on the type of car, mileage and operating conditions. In this article we will figure out which filters must be replaced and which ones can be left for the next maintenance.

Modern cars are equipped with several types of filters, each of which performs its own function. Some of them are directly connected to the engine lubrication system, others to the fuel system or interior. Main rule: The oil filter is always changed, and the rest - according to regulations or if there are signs of wear.

If you plan to service the machine yourself, it is important to understand that the wrong choice or untimely replacement of filters can lead to serious damage. For example, a clogged oil filter will cause oil starvation, and a worn air filter will increase fuel consumption. Next, we will analyze in detail each type of filter, their purpose and replacement frequency.

1. Oil filter: why it always needs to be changed

The oil filter is key element of the engine lubrication system, which cleans engine oil from metal shavings, wear products and other contaminants. If it is not replaced along with the oil, all accumulated deposits will end up in the new lubricant, which will negate the entire replacement procedure.

Modern oil filters come in three types:

  • 🔧 Mechanical (all-metal) - reliable, but require regular replacement. Used in most budget cars.
  • 🔄 Replacement cartridges - used in systems with a permanent housing (for example, in some models Volkswagen and BMW).
  • 💡 Magnetic — additionally capture metal particles, but are less common.

The service life of the oil filter directly depends on the quality of the oil and operating conditions. For example, with frequent trips on dusty roads or in traffic jams, the filter clogs faster. If you use semi-synthetic oil, the filter may fail after 7-8 thousand km, whereas with synthetics it will last up to 15 thousand km.

⚠️ Attention: Never wash the old oil filter with gasoline or solvents! This destroys the filter element and can allow dirt to enter the engine.
📊 How often do you change the oil filter?
Every time you change the oil
Every other time
Only when the Check Engine light comes on
I don't know what it is

2. Air filter: when to change it along with the oil

The air filter is responsible for cleaning the air entering the engine. A clogged filter reduces air flow, resulting in:

  • ⚡ Increased fuel consumption (up to 10-15%).
  • 🔥 Deterioration of acceleration dynamics.
  • 🛑 Risk of dust getting into the cylinders, which accelerates wear of the piston group.

Manufacturers recommend changing the air filter every 15-30 thousand km, but in real conditions this period may be reduced. For example, if you often drive on dirt roads or in very dusty conditions, the filter may become unusable after just 10 thousand km.

How do you know when it's time to change the air filter?

  • 🔍 Visually: if the filter element has turned gray or black.
  • 🚗 The engine began to “suffocate” when accelerating.
  • 💨 Fuel consumption has increased for no apparent reason.
⚠️ Attention: In diesel engines, the air filter is critical - its contamination can lead to turbine failure. Check its condition every 10 thousand km.
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If you often drive on dusty roads, install a pre-filter (eg K&N or Mann) - it will extend the life of the main filter.

3. Fuel filter: does it need to be replaced when changing the oil?

The fuel filter removes impurities, water and rust from gasoline or diesel fuel. Its condition directly affects the operation of the injectors and fuel pump. Unlike the oil filter, the fuel filter is not always changed along with the oil - it all depends on the type of engine and mileage.

Time frame for replacing the fuel filter:

Engine type Recommended replacement interval Signs of wear
Gasoline (injector) 30-50 thousand km Jerky acceleration, difficult starting
Gasoline (carburetor) 20-30 thousand km Unstable speed, engine sneezing
Diesel 10-20 thousand km Loss of power, black smoke from the exhaust
Gas cylinder equipment (GBO) 10 thousand km Popping sounds in the receiver, errors in the oxygen sensor

In some modern cars (for example, Toyota or Honda) the fuel filter is built into the fuel pump and is changed only when it is replaced. In diesel cars, the filter is often equipped with a water sensor - if it is triggered, it must be replaced immediately.

What happens if you don't change the fuel filter?

A clogged filter increases the load on the fuel pump, which can lead to its failure. In diesel engines, dirt in the filter accelerates wear of the injectors, the repair of which will cost 20-50 thousand rubles.

4. Cabin filter: does it affect the oil change?

The cabin filter cleans the air entering the cabin through the ventilation system. At first glance, it is not related to changing the oil, but its condition indirectly affects the comfort and even safety of driving. A clogged filter can cause:

  • 🤧 Allergic reactions in the driver and passengers.
  • 🌫️ Glass fogging due to poor air circulation.
  • 🦠 Development of mold and unpleasant odor in the cabin.

Manufacturers recommend changing the cabin filter every 15-20 thousand km, but in reality its condition depends on operating conditions. For example, in megacities with high levels of air pollution, the filter may become unusable after just 10 thousand km.

Which cabin filter to choose?

  • 🍃 Normal (dust) - traps dust and small debris. Suitable for most regions.
  • 🛡️ Coal - additionally absorbs harmful gases and unpleasant odors. Relevant for cities with poor ecology.
  • 🦠 Antibacterial - prevents the proliferation of microbes. Recommended for allergy sufferers.

The windows fog up even when the air blower is on|A persistent unpleasant odor has appeared in the cabin|Weak air flow from the deflectors|Frequent sneezing or allergies among passengers-->

5. How to choose filters by car make

When purchasing filters, it is important to consider not only their type, but also compatibility with a specific car model. Using the wrong filter may result in:

  • 🔧 Poor sealing (for example, if the oil filter does not fit the thread).
  • 🚗 Deterioration of filtration (if the air filter is smaller).
  • ⚡ Engine breakdown (if the fuel filter is not designed for system pressure).

Best Filter Brands for 2026:

Filter type Recommended Brands Average price (RUB)
Oily Mann, Bosch, Framm 300-1200
Air K&N, Mahle, SCT 200-800
Fuel SCT, Nipparts, JS Asakashi 400-1500
Salon Corteco, Filtron, TSN 150-600

To avoid making a mistake with your choice, use:

  • 📖 Manufacturer's catalogs (for example, Mann-Filter or Bosch).
  • 🔍 Online selection services (for example, Exist.ru or Autodoc).
  • 📱 Mobile applications (for example, AutoDoc Scanner).
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Never buy filters from "no-name" brands - they may not meet the declared characteristics and lead to engine damage.

6. Is it possible to save money on filters?

Many drivers try to save money by buying cheap filters or extending their service life. However, such savings often result in expensive repairs. Let's look at the most common mistakes:

Mistake 1: Buying filters without certification

Low quality filters can:

  • 🔧 Have poor sealing (oil or fuel will leak past the filter).
  • 🧴 Use low-quality filter material that clogs quickly.
  • 💥 Collapse under pressure (especially important for diesel engine fuel filters).

Mistake 2: Flushing instead of replacing

Some drivers wash oil or air filters to save money. However:

  • 🧼 Detergents destroy the structure of the filter material.
  • 🔄 Even after washing, microparticles of dirt remain in the filter.
  • ⚠️ Risk of detergent getting into the engine or fuel system.

Mistake 3: Ignoring replacement regulations

If you decide to “endure” another 5 thousand km with a clogged filter, be prepared for:

  • 🔥 Increased engine wear (due to oil starvation or poor air filtration).
  • 💰 Increased fuel consumption by 10-20%.
  • 🚨 The appearance of errors on the dashboard (for example, P0171 - lean mixture due to a clogged air filter).
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If your budget is limited, it is better to save on the cabin filter (you can change it later), but never skimp on the oil and fuel!

7. Step-by-step instructions: how to change filters yourself

If you decide to replace the filters yourself, follow these instructions. To work you will need:

  • 🔧 Set of keys and sockets.
  • 🛠️ Oil filter puller (if it is screwed too tightly).
  • 🧴 New oil and filters.
  • 🧻 Rags and container for draining oil.

Step 1: Replace the oil filter

  1. Warm up the engine to operating temperature (the oil will become less viscous).
  2. Place a container under the drain hole and unscrew the plug.
  3. After draining the oil, unscrew the oil filter (a puller may be required).
  4. Lubricate the rubber seal of the new filter with oil and install it in place.
  5. Tighten the filter by hand (do not use a wrench to avoid stripping the threads!).

Step 2: Replace the air filter

  1. Open the hood and locate the air filter housing (usually a black plastic box).
  2. Unfasten the latches or unscrew the cover bolts.
  3. Remove the old filter and clean the housing from dust.
  4. Install the new filter, observing the direction of air flow (indicated by the arrow on the housing).

Step 3: Replace the fuel filter

In gasoline cars, the filter is usually located under the bottom or in the engine compartment. In diesel engines, it is often built into the fuel line. Replacement algorithm:

  1. Relieve pressure in the fuel system (pull out the fuel pump fuse and start the engine until it stops).
  2. Disconnect the fuel hoses (use a rag as gasoline may spill!).
  3. Unscrew the filter mount and install a new one.
  4. Connect the hoses and check for leaks (start the engine and inspect the connections).

Step 4: Replacing the cabin filter

  1. The cabin air filter is usually located behind the glove compartment or under the dashboard.
  2. Remove the filter cover (a screwdriver may be required).
  3. Remove the old filter and install the new one, paying attention to the air direction.
⚠️ Attention: After replacing the fuel filter, the engine may run rough for the first few seconds - this is normal, as the pump needs to fill the system with fuel.

Oil level (must be between MIN and MAX)|Oil filter tightness (no leaks)|Engine idling (no jerking)|Condition of fuel hoses (no cracks)-->

8. Frequently asked questions about replacing filters

Do I need to change all filters at every oil change?

No, only the oil filter is required. Air and cabin filters are changed according to regulations (usually every 15-30 thousand km), and fuel filters - less often (30-50 thousand km for gasoline engines). However, if the filters are clearly dirty, it is better to replace them ahead of schedule.

Can filters from other car brands be used?

Theoretically, yes, if they match in size and characteristics. But it is better to choose filters recommended by your car manufacturer. For example, a filter from Toyota Corolla may suit Kia Rio, but only if their catalog numbers are identical.

How often do you need to change filters in a diesel engine?

In diesel engines, filters are changed more often due to the characteristics of the fuel:

  • Oil - every 10-15 thousand km.
  • Fuel - every 10-20 thousand km (or more often if low-quality diesel fuel is used).
  • Air - every 15 thousand km (due to high dust levels during turbine operation).
What happens if you don't change the cabin filter?

A clogged cabin filter leads to:

  • Deterioration in the performance of the stove and air conditioner.
  • The appearance of an unpleasant odor in the cabin (due to the growth of bacteria).
  • Increased load on the heater fan, which can lead to its breakdown.

In addition, dust and allergens from a dirty filter enter the lungs of the driver and passengers.

Is it possible to drive without an air filter?

Absolutely not! Without an air filter, unfiltered air containing dust and abrasive particles will enter the engine. This will lead to:

  • Rapid wear of cylinders and piston rings.
  • Sand entering the oil system, which will cause scoring on the cylinder walls.
  • Reducing turbine life (in diesel and turbocharged gasoline engines).

Even short-term driving without a filter can result in a major engine overhaul.