How to choose the right engine oil?

Contents

• What does viscosity mean and why is it so important?
• Key characteristics of engine oils and their specification
• How to choose the right oil for gasoline or diesel engines?

Choosing engine oil is one of the most important aspects for the longevity and efficiency of a vehicle's engine. The wrong choice can lead to premature wear, increased fuel consumption, and even serious damage.

To avoid these problems, follow a few basic principles that will help you make an informed and correct choice.

What does viscosity mean and why is it so important?

Viscosity determines how thick engine oil is and how its flowability changes at different temperatures. It is a critical parameter that affects engine lubrication, especially during cold starts or under extreme loads.

Lower-viscosity oils like 5W-30 provide easier starting in cold weather and faster lubrication. High-viscosity oils, on the other hand, like 10W-40, offer better protection at high temperatures, but may increase resistance during cold starts.

The recommended viscosity for your car is described in the manufacturer's service documentation. If you choose engine oil with inappropriate thickness, friction may increase, leading to increased wear of components and loss of power.

Always adhere to the manufacturer's specifications for optimal engine performance.

Key characteristics of engine oils and their specification

Each type of engine oil has certain characteristics that make it suitable for different types of vehicles and operating conditions. The main categories are:

1. Mineral

   They are obtained from refining crude oil, are more affordable, but have a shorter change interval – every 10,000 km. Suitable for older car models.

2. Semi-synthetic

   A combination of mineral and synthetic oils, providing a good balance between price and quality. Require change between 12,000 – 15,000 km.

3. Synthetic

   Offer excellent protection, stability at extreme temperatures and conditions. Ideal for modern engines. For these, the recommendation is replacement at a mileage of 15,000 – 20,000 km.

Regular oil changes are key to trouble-free engine operation. However, engine maintenance does not end with replacing the oil and filter – regularly checking the level and condition is also important to avoid damage and premature wear.

How to choose the right oil for gasoline or diesel engines?

The type of engine also determines the choice of oil. Gasoline and diesel engines operate under different conditions and loads, which requires the use of products with appropriate specifications.

To ensure maximum efficiency and longevity of the engine, choose engine oil that meets the needs of the combustion process:

• for gasoline cars – oils with API S specification (for example, API SN) or ACEA A (for example, ACEA A5/B5) are recommended, which provide optimal protection and performance;

• for diesel cars – you should look for products with API C specification (for example, API CK-4) or ACEA B/E (for example, ACEA B4 or E7), which are tailored to the requirements of diesel units.

Using inappropriate engine oil can lead to reduced engine efficiency, increased fuel consumption, and additional strain on key components such as the diesel particulate filter (DPF) in diesel engines.

Ensure optimal vehicle performance by trusting the specialized technicians in our auto service. With every service at Ondrive you also receive a free suspension check, which provides additional safety on the road.