17/11/2025
You often see codes like 5W-30 or 10W-40, but what do they actually mean?
This code tells you how the oil flows in cold and hot temperatures.
💡 Explanation:
The letter W stands for Winter.
The number before W shows how easily the oil flows in cold starts. Lower number = thinner oil, easier starts.
The number after W shows the oil thickness at engine operating temperature. Higher number = thicker oil, better protection in heat.
🔩 Example:
5W-30 → ideal for cold or moderate climates.
20W-50 → better for hot climates or older engines.
🔥 Professional Tip:
Always choose oil based on:
1. Climate
2. Engine type
3. Manufacturer recommendations
Wrong oil = more fuel consumption + engine noise + faster wear.
