Selecting the correct engine oil viscosity is paramount for engine protection in Sudan's consistently high-temperature climate. For most modern gasoline and diesel vehicles operating in this extreme heat, a multi-grade synthetic oil with a higher second number is ideal. Viscosities such as 5W-40, 10W-40, or 15W-40 are highly recommended. The "W" (winter) rating ensures reliable cold s... https://ecollubricants.com/