The "W" stands for Winter . A lower number (like 0W or 5W) means the oil is thinner in cold weather, allowing it to reach critical engine parts faster during a cold start, which is when most engine wear occurs.
Buying engine oil is more than just a maintenance chore—it’s a deep dive into the lifeblood of your vehicle. To choose the right oil, you must decode the labels and understand how different formulations affect your engine's longevity. 1. Decoding the "Code" on the Bottle
Your choice between conventional, synthetic, or blends depends on your car's age, performance, and your budget. How to Choose the Best Engine Oil for Your Car - Spinny
The labels on oil bottles, such as , are standardized codes from the Society of Automotive Engineers (SAE) that describe how the oil flows.