What is the Difference Between Synthetic Oil and Regular Oil?

The main difference between synthetic oil and conventional oil lies in their composition and performance. Here are the key differences:

1. Composition: Conventional oil is derived from crude oil, while synthetic oil is engineered in a lab. Synthetic oil molecules are designed to have a uniform size, making their ability to lubricate more stable and reliable at both cold and hot engine temperatures.
2. Performance: Synthetic oil generally provides better extreme high temperature and low temperature performance compared to conventional oil. It also resists engine heat and stress longer than conventional oil.
3. Additives: Both conventional and synthetic oils contain chemical additives that improve viscosity, function as detergents, and help resist corrosion and foaming. However, synthetic oils are typically formulated with higher-performing additives.
4. Oil Change Intervals: Synthetic oil can provide longer oil change intervals than conventional oil. While conventional oil needs to be changed every 3,000 miles or once per season, synthetic oil can last between 6,000 and 10,000 miles before needing another oil change.
5. Cost: Conventional oil is generally less expensive than synthetic oil. However, the higher price of synthetic oil can be balanced out by its longer lifespan and potentially reduced engine wear.

To determine whether your vehicle requires conventional or synthetic oil, consult your owner's manual. If you own a vehicle that regularly operates in harsh conditions, you might want to consider using synthetic oil even if it's not required.

Comparative Table: Synthetic Oil vs Regular Oil

Here is a table comparing the differences between synthetic oil and regular oil:

In summary, synthetic oil is made through chemical processes and comprises artificial chemical compounds, resulting in more consistent molecular size and structure. This leads to less friction, better performance, and extended engine life. On the other hand, regular oil is derived naturally from refined crude oil and has fewer additives, leading to more friction and less effective performance in extreme temperatures. Synthetic oil generally costs more than regular oil but requires less frequent changing.