November 15, 2023
What happens when you add synthetic oil to conventional engine oil
Mixing synthetic oil with conventional engine oil is generally safe and won’t cause immediate harm to your engine. However, there are a few important considerations to keep in mind:
- Compatibility: Most modern synthetic oils are designed to be compatible with conventional oils. They are often labeled as “mixable” or “compatible with conventional oil.” However, it’s always a good practice to check the label on the synthetic oil container to ensure compatibility with your engine.
- Mixing Ratios: While it’s generally safe to mix synthetic and conventional oils, it’s not recommended to mix them in large quantities. If you need to top up your engine oil and have a small amount of synthetic oil on hand, you can mix it with conventional oil without major issues. However, it’s best not to mix them in equal proportions or use a high percentage of synthetic oil without consulting your vehicle’s manufacturer or a mechanic.
- Performance Benefits: Synthetic oils often offer superior performance and protection compared to conventional oils. If you mix synthetic oil with conventional oil, you may not fully realize the benefits of the synthetic oil, such as improved high-temperature stability, reduced friction, and better wear protection.
- Change Interval: If you decide to mix synthetic and conventional oils, it’s a good idea to stick to your regular oil change interval based on the conventional oil’s specifications. Mixing oils doesn’t magically extend the interval; you should still change the oil as recommended by your vehicle manufacturer.
- Monitor Oil Levels: After mixing oils, it’s essential to monitor your oil levels regularly and maintain them within the recommended range. Ensure that you don’t overfill the engine with oil.
- Consult Your Vehicle’s Manual: The best practice is always to follow the recommendations in your vehicle’s owner’s manual. If your manual specifies using synthetic oil, it’s usually best to stick with it. If it allows for conventional oil, you may use a synthetic blend or switch to full synthetic oil if you prefer.
In summary, while mixing synthetic oil with conventional oil is generally safe in small quantities and for short periods, it’s not the best approach for long-term engine protection and performance. It’s better to use the oil recommended by your vehicle’s manufacturer and follow their guidelines for oil changes and maintenance. If you’re considering a switch to synthetic oil, consult your owner’s manual and, if needed, consult a mechanic for advice.
How much longer does synthetic oil last over conventional oil?
Synthetic oil typically lasts longer than conventional oil due to its superior performance characteristics and resistance to breakdown. While the exact duration can vary depending on several factors, including your driving habits, climate, and the specific synthetic oil used, synthetic oil can generally provide extended oil change intervals compared to conventional oil.
Here are some key factors that contribute to the longer lifespan of synthetic oil:
- Temperature Stability: Synthetic oil can withstand higher temperatures without breaking down. This means it maintains its lubricating properties even in extreme heat, which can help extend the oil’s lifespan.
- Reduced Oxidation: Synthetic oils are less prone to oxidation compared to conventional oils. Oxidation can lead to the formation of sludge and deposits in the engine, which can reduce the oil’s effectiveness. Synthetic oils resist oxidation better, helping them last longer.
- Better Wear Protection: Synthetic oils often provide superior wear protection, which can reduce engine component wear over time. This can lead to longer engine life and less frequent oil changes.
- Improved Cleaning Properties: Synthetic oils typically have better detergency and dispersancy properties, helping to keep the engine cleaner. A cleaner engine is less likely to develop deposits and sludge, which can extend the oil’s life.
- Consistency: Synthetic oils have a more consistent molecular structure compared to conventional oils, which means they maintain their viscosity (thickness) better over time. This consistency helps them continue to protect the engine effectively.
While synthetic oil generally lasts longer, it’s essential to note that oil change intervals can still vary depending on your vehicle and driving conditions. The best practice is to consult your vehicle’s owner’s manual for the manufacturer’s recommended oil change interval. Many modern vehicles equipped with synthetic oil from the factory may have longer recommended intervals compared to older vehicles designed for conventional oil.
In some cases, using synthetic oil may allow you to extend the oil change interval beyond what is recommended for conventional oil. However, it’s crucial to follow the manufacturer’s guidelines and consider factors like your driving habits and climate when determining the appropriate oil change interval for your specific situation.
Ultimately, the longevity of synthetic oil compared to conventional oil is one of the advantages of synthetic oil, but it’s just one factor to consider when choosing the right oil for your vehicle.
