However, generally speaking, a good starting point would be:
* 5W-20: This is a common viscosity for modern engines and is likely suitable for most 2010 Ford Rangers in moderate climates.
* 5W-30: This is a slightly thicker oil and might be better suited for hotter climates or if your Ranger has higher mileage.
Crucially: Look in your owner's manual. It will specify the correct viscosity (like 5W-20 or 5W-30) and the API certification (like SN or SM). Using the incorrect oil can damage your engine. The manual will also likely specify whether to use conventional, synthetic blend, or full synthetic oil. While full synthetic is often recommended for extended drain intervals and better performance, conventional oil is perfectly acceptable and often more economical.
