What oil for 2004 f250 diesel 6.0?

The 2004 Ford F-250 6.0L Power Stroke diesel requires a specific type of oil. Do not use conventional oil. You need to use a high-quality CJ-4 rated diesel engine oil that meets the Ford specification. The viscosity grade should be either 15W-40 or 5W-40, depending on your climate. Check your owner's manual for the exact recommendation, as it might specify a preference based on temperature.

Beyond the CJ-4 rating and viscosity grade, consider these factors:

* Synthetic vs. Conventional: Synthetic oil is generally recommended for the 6.0L Power Stroke due to its better high-temperature protection and overall performance. It will help extend the life of your engine.

* Brand: Many reputable brands produce CJ-4 oils suitable for your truck. Examples include Shell Rotella, Mobil Delvac, and Valvoline MaxLife Diesel. Read reviews and choose a brand you trust.

Crucially: Always consult your owner's manual for the manufacturer's specific recommendations. This information is a guideline; the manual contains the definitive answer for your vehicle. Using the incorrect oil can severely damage your engine.