The recommended oil grade for a Ford Ranger 3.0L 6-cylinder engine depends on the year and specific model.
You absolutely must consult your owner's manual. The manual will specify the correct oil viscosity grade (like 5W-30, 5W-20, etc.) and the type of oil (synthetic, synthetic blend, or conventional).
Using the wrong oil grade can seriously damage your engine. Don't rely on general advice found online; always refer to your owner's manual for the manufacturer's precise recommendations.
