Oil Additives vs. Full Synthetic Oil: Do You Need Both?
For most engines running a modern full synthetic, you don't need additives on top. See when a standalone additive, full synthetic alone, or both actually applies.
2 weeks ago
The Valvoline Blog
Practical, expert-backed advice on oil change intervals, mixing oils, extending engine life, and getting the most value from every quart.
Understand the fundamentals of motor oil — from synthetic vs conventional to base oil chemistry and additive packages. Everything you need to make informed decisions about engine lubrication.