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What is the recommended oil type for a 2000 F 250 7.3 power stroke diesel?

The recommended oil type for a 2000 Ford F-250 7.3 Power Stroke diesel is 15W-40 CH-4 rated oil. However, it's crucial to check your owner's manual for the most definitive recommendation.

While 15W-40 CH-4 was common, some owners successfully use newer oils that meet CJ-4 or even CI-4 Plus specifications. These newer specifications generally offer improved performance and longevity, but always ensure the oil meets the minimum CH-4 rating. Using a significantly lighter weight oil is not recommended.

Finally, always use a high-quality diesel-rated oil from a reputable brand.