When you get an oil change, you’ve probably been asked whether you want conventional, synthetic blend or full synthetic oil. It’s a fair question, and most people answer it with a shrug. Here’s a simple way to understand the difference.
Conventional oil is refined from crude oil. It’s the most affordable option and it works well in many older engines with simple designs. It breaks down faster in high heat, so it usually needs to be changed more often.
Full synthetic oil is engineered in a lab to be more uniform and more stable. It flows better on cold mornings, holds up better in extreme heat and lasts longer between changes. Many newer engines, especially turbocharged ones, are designed to use it and actually require it.
A synthetic blend is a mix of the two. It offers some of the protection of synthetic at a price closer to conventional, and it’s a reasonable middle ground for many cars and trucks.
The most important rule is simple. Use the type and thickness of oil your vehicle’s manufacturer recommends. You’ll find it in your owner’s manual and often on the oil cap. Those numbers, like 0W-20 or 5W-30, describe how thick the oil is when cold and when hot. Using the wrong one can affect how well your engine is protected.
If your car calls for conventional oil, you can still choose to upgrade to synthetic, and some drivers like the extra protection. If your car calls for synthetic, though, switching back to conventional to save a few dollars isn’t a good idea.
We’ll always use the oil your vehicle is designed for and explain your options in plain terms. Call Franklin Automotive at (615) 472-8052 or stop by 307 5th Ave N in downtown Franklin, Monday through Friday from 7 to 5.
