* SAE 5W-30: This is a common and likely the recommended viscosity for most engines in that year and model.
* API Certified Oil: Look for an API certification symbol on the oil bottle. The specific certification (e.g., SJ, SL, SM) might be specified in your owner's manual. Newer certifications (like SN or SP) are generally backward compatible but checking your manual is best.
Crucially: Check your owner's manual. The manual will give you the *precise* oil type and viscosity your truck's engine requires. Using the wrong oil can damage your engine.