What kind of oil to use in 2003 Ford Ranger?

The type of oil for your 2003 Ford Ranger depends on the engine it has. Ford Rangers of that year came with several different engines. To determine the correct oil, you need to check your owner's manual. It will specify the correct viscosity (like 5W-30 or 10W-30) and the type of oil (conventional, synthetic blend, or full synthetic).

However, in general, a common recommendation for many 2003 Ford Ranger engines is 5W-30. This is a good starting point, but always defer to your owner's manual for the definitive answer. Using the wrong oil can damage your engine.

Once you know the recommended viscosity, you can choose between conventional, synthetic blend, or full synthetic oil. Full synthetic is generally more expensive but offers better performance and protection, while conventional is the most affordable option. Synthetic blends fall somewhere in between.