Oil is a critical component in the functioning of an engine. It lubricates the moving parts, reduces friction, and keeps the engine clean. However, with so many types of oils available on the market, it can take time to decide which is best for your vehicle. Two common types of oils are synthetic and conventional oils. In this blog post, we will explore the pros and cons of synthetic vs. conventional oils to help you make an informed decision.  

What is Conventional Oil?  

Conventional oil is a mineral-based lubricant derived from crude oil. It is the most common type of motor oil used in cars today. Traditional oil is affordable and readily available, making it a popular choice among car owners.  

Pros of Conventional Oil:  

Cost-Effective: Conventional oil is cheaper than synthetic oil, making it an affordable option for those on a tight budget. 

Widely Available: Since conventional oil is the most commonly used oil, it is widely available, making it easier to find and purchase.

Cons of Conventional Oil:  

Shorter Lifespan: Conventional oil has a shorter lifespan than synthetic oil, meaning you’ll need to change it more frequently, increasing maintenance costs. 

Poor Performance in Extreme Temperatures: Conventional oil is more likely to break down in extreme temperatures, which can lead to engine damage. 

What is Synthetic Oil? 

Synthetic oil is an artificial lubricant made from chemicals and natural oils. It is designed to offer superior performance and protection for your engine.  

Pros of Synthetic Oil:  

Longer Lifespan: Synthetic oil has a longer lifespan than conventional oil, which means you won’t have to change it as frequently, reducing maintenance costs. 

Better Performance in Extreme Temperatures: Synthetic oil performs better in extreme temperatures, providing better engine protection in cold and hot weather conditions. 

Improved Engine Performance: Synthetic oil has a lower viscosity than conventional oil, which means it flows more easily through the engine, reducing friction and improving engine performance.

Cons of Synthetic Oil: 

More Expensive: Synthetic oil is more expensive than conventional oil, which can be a turnoff for those on a tight budget. 

Not Widely Available: Synthetic oil is less widely available than conventional oil, making it more challenging to find and purchase. 

May Cause Leaks: In some cases, switching to synthetic oil can cause leaks in older engines that have been running on conventional oil for a long time. 


Both synthetic and conventional oils have their pros and cons. While synthetic oil offers superior performance and engine protection, it is more expensive and less widely available than conventional oil. On the other hand, conventional oil is cost-effective and widely available, but it has a shorter lifespan and performs poorly in extreme temperatures.  

Ultimately, the choice between synthetic and conventional oil depends on your budget, driving habits, and the needs of your vehicle. Consult a professional mechanic at Auto Works in Woodbury, MN, to determine which oil is best for your car.