Close up of a quarter of oil being poured into an engine
Synthetic oil changes are essential for maintaining vehicle performance and longevity. Unlike conventional oils, synthetic oils are engineered to provide superior lubrication and protection under extreme conditions, making regular oil changes a critical aspect of vehicle maintenance. Ensuring these changes are made at appropriate intervals helps to optimize engine health and efficiency. Continue reading to find out how often to change synthetic oil. 

Synthetic vs. Conventional Oil

Synthetic oil is refined from crude oil and engineered to surpass conventional oil's performance and protection levels. Conventional oils provide satisfactory lubrication for standard driving conditions and are less expensive; however, their molecular structure varies, which can affect performance under different conditions. In contrast, synthetic oil is crafted through a complex chemical synthesis process that creates uniform molecular structures designed for optimal efficiency, stability, and viscosity at varying temperatures.

This uniformity in synthetic oils offers enhanced protection against wear and corrosion and significantly reduces the oil's propensity to thin at high temperatures or thicken in extreme cold. As a result, synthetic oils are less likely to undergo oxidation or degrade, which is common in conventional oils under harsh operating conditions. This stability helps prevent sludge formation and varnish, which can impair engine function and reduce efficiency.

The advanced additives included in synthetic oils, which improve their ability to clean engine parts, are crucial for maintaining engine health and prolonging its life, and influence how often to change synthetic oil. These additives also make synthetic oils more effective in protecting critical engine parts in high-performance engines or vehicles that operate in demanding driving conditions, such as towing heavy loads, frequent stop-and-go traffic, or fluctuating extreme temperatures.

The superior qualities of synthetic oil allow for longer oil change intervals compared to conventional oil, significantly reducing maintenance frequency and potentially lowering long-term operating costs. This makes synthetic oil a preferred choice for modern engines and those seeking to enhance their vehicles' performance and longevity under various environmental stresses and driving habits​.

Why Use Synthetic Oil?

The advantages of using synthetic oil are numerous, particularly concerning engine performance and longevity. Its superior formulation allows for better high-temperature stability, enhanced flow properties, and resistance to breakdown. This means synthetic oil can protect engine parts more effectively, reduce the build-up of sludge and deposits, and maintain performance under strenuous conditions. Additionally, synthetic oils can improve fuel efficiency and reduce engine wear over time, making them a more cost-effective option in the long run​.

 

Factors Affecting Oil Change Frequency

Several factors can influence how often to change synthetic oil. These include the type of vehicle, engine conditions, driving habits, and environmental factors such as temperature and terrain. For instance, vehicles frequently used for towing or in stop-and-go traffic may require more frequent oil changes. Similarly, extreme weather conditions can also necessitate more frequent changes to maintain optimal engine function​.

General Guidelines for Synthetic Oil Change

Generally, synthetic oils allow longer intervals between oil changes than conventional oils. Many manufacturers recommend changing synthetic oil every 7,500 to 10,000 miles,or about every six months, depending on the vehicle's make and usage conditions. However, it is crucial to consult the vehicle's owner's manual and follow manufacturer recommendations to ensure proper maintenance  and to avoid any impact on warranty coverage​.

Time-Based Approach

Adhering to a time-based approach, changing synthetic oil every six to twelve months is advisable. This interval is crucial for vehicles with low mileage where the oil's condition may degrade due to age and environmental factors, not just use. Time-based changes ensure that oil retains optimal lubrication and protective qualities, which is essential for maintaining engine health. This method ensures that oils do not deteriorate from prolonged exposure, regardless of the miles driven​.

Mileage-Based Approach

For a mileage-based approach, synthetic oil changes are typically recommended every 7,500 to 10,000 miles, although advanced synthetics might extend up to 15,000 miles under ideal conditions. This strategy tailors maintenance to the vehicle's operational demands, ensuring that oil changes align with the degradation of its protective and lubricative capabilities. Drivers should adjust this interval based on specific driving habits and conditions, such as frequent short trips or extreme environments, which may necessitate more frequent changes to maintain optimal engine performance​.

Signs That It's Time for an Oil Change

Key indicators for an oil change include: 

  • An illuminated oil change reminder or maintenance light. 
  • The oil that has darkened or appears excessively dirty. 
  • Increased engine noise. 
  • A decrease in performance or fuel efficiency.

A burnt smell or the presence of metallic particles and excessive debris in the oil also signals the need for an oil change. These signs suggest that the oil no longer protects the engine, risking increased wear and potential damage. Regularly monitoring these signs helps maintain engine efficiency and prolongs its lifespan, emphasizing the importance of how often you change synthetic oil.

Mixing Conventional and Synthetic Oil 

Mixing conventional and synthetic oils is not advisable as it can compromise the superior qualities of synthetic oil. While not immediately harmful, such mixing may lead to a reduced lifespan of the oil and diminished engine protection, potentially requiring more frequent changes. Sticking to the recommended oil type-whether synthetic or conventional-is essential for maximizing engine performance and longevity. Always consult your vehicle's manufacturer guidelines or a professional mechanic to ensure optimal oil usage and avoid any negative effects on engine health​.

man pouring a quart of oil into a Hyundai 

Service Your Hyundai at Central Hyundai

Servicing your Hyundai at Central Hyundai guarantees professional care with high-quality synthetic oils, ensuring your vehicle operates at its best. The dealership's experienced technicians use advanced diagnostics and genuine parts, tailored specifically to Hyundai's specifications. 

Regular servicing at a certified dealership helps maintain your warranty and enhances your vehicle's reliability and efficiency. Trust Central Hyundai for your maintenance needs to keep your Hyundai in optimal condition, safeguarding your investment and ensuring peace of mind​.