What Is Engine Oil and What Does It Do?

The engine is one of the most vital components of your car — a system that is constantly in motion and naturally exposed to friction and wear. Engine oil’s primary function is to minimize this wear and tear, helping the engine operate efficiently and extend its lifespan. Engine oil is a blend of base oils and performance-enhancing additives. These additives form a protective lubricating film between engine components, reducing friction and helping to disperse heat. Without sufficient lubrication, metal parts rub directly against each other, which can lead to serious engine damage. The core functions of engine oil include lubrication, cooling, cleaning, corrosion protection, and sealing. It creates a thin, slippery layer between moving parts, reducing friction and preventing premature wear. It absorbs heat generated during operation, helps cool the engine, and carries dirt and deposits to the filter — keeping the system clean and efficient. It prevents corrosion by protecting the metal surfaces from rust and oxidation. Its sealing properties ensure tightness between components, maintaining pressure and performance. Regular oil checks and timely changes are essential. Over time, engine oil accumulates dirt and loses its effectiveness. That is why it must be replaced at the intervals recommended by your vehicle’s manufacturer. When selecting engine oil, make sure it matches your engine type and driving conditions. The viscosity rating on the oil label indicates its flow characteristics and suitability for different temperatures. Using Petrol Ofisi’s high-quality engine oils helps maximize your vehicle’s performance and longevity.

Engine oil plays a crucial role in keeping your engine running smoothly and ensuring long-term durability. Neglecting regular oil changes can lead to costly repairs and even complete engine failure. To avoid this, follow your manufacturer’s recommended maintenance schedule and never overlook oil checks.

Engine oils are categorized based on their composition and performance characteristics. The three main types are mineral, semi-synthetic, and fully synthetic oils. Mineral Oils: The most basic form of engine oil, derived directly from refined crude oil. They are affordable but have a shorter lifespan compared to synthetic oils. Semi-Synthetic Oils: A blend of mineral and synthetic oils that offers better performance and longer durability than mineral-based options. They strike a balance between cost-effectiveness and protection. Synthetic Oils: Laboratory-engineered oils that provide the highest performance and protection levels. They resist oxidation and wear exceptionally well, offering longer service intervals and enhanced engine care.

Choose an oil suitable for your engine type, operating conditions, and budget. Click here to explore Petrol Ofisi’s premium range of engine oils.

Viscosity: Always use an oil with the viscosity grade specified in your vehicle’s owner’s manual.

Performance Standards: Select oils that meet industry standards such as API or ACEA to ensure optimal engine protection.

Brand Reliability: Choosing a trusted and reputable brand guarantees consistent quality and performance. Petrol Ofisi offers top-tier engine oils designed to meet diverse vehicle needs.

Driving Conditions: If you often drive under harsh or demanding conditions, opt for long-lasting oils such as semi-synthetic or fully synthetic formulations for superior protection.

Regular oil changes are essential for maintaining top performance and extending the engine’s life. The recommended change interval depends on your engine type, driving habits, and oil quality. In general, oil in gasoline engines should be changed every 5,000–10,000 km, and in diesel engines every 7,500–15,000 km. You can either change the oil yourself or have it replaced by an authorized service center. Always replace the oil filter during each oil change.

Note: The ideal change intervals are determined by your vehicle manufacturer. Refer to your car’s service manual or consult an authorized service center for the correct schedule.

Regularly monitoring your oil level is just as important as changing it. You can check the level using the dipstick located under the hood. The dipstick shows both minimum and maximum levels for reference. If the oil level is below the minimum mark, add oil immediately. Check the oil only when the engine is cold, as a hot engine may give inaccurate readings. Used engine oil must always be disposed of safely. It contains substances that can be harmful to the environment if not handled properly. Therefore, always deliver used oil to an authorized collection facility for recycling or safe disposal.