What kind of oil does a 6.7 Ford f350 take?
The 6.7L Power Stroke diesel in Ford F-350 pickups typically requires a full-synthetic diesel engine oil, most commonly SAE 5W-40, that meets API CK-4 (and CJ-4) specifications. The engine holds about 11 quarts of oil with a filter, and you should confirm the exact specification for your model year in the owner's manual or Ford’s maintenance guide.
Beyond the basics, this guide explains the expected oil grade, how much oil to use, and practical tips for maintaining the engine over time.
Oil grade and specifications
The standard for most 6.7L Power Stroke engines is SAE 5W-40 full-synthetic diesel engine oil. It should meet API CK-4 (and CJ-4 for older formulations). Ford commonly endorses Motorcraft 5W-40 Diesel Engine Oil as a compatible option, but any reputable API CK-4/CJ-4 5W-40 diesel oil that meets Ford’s service spec should be acceptable. Using a quality oil designed for diesel engines helps with cold starts, protection under load, and longevity.
Why the CK-4/CJ-4 specification matters
CK-4 and CJ-4 are diesel-specific oil categories that provide the stability and soot control required by heavy-duty turbo-diesel engines like the 6.7 Power Stroke. They ensure proper lubrication at high temperatures and under heavy workloads, such as towing or hauling.
Oil capacity and change frequency
The 6.7L Power Stroke typically requires about 11 quarts of oil (approximately 10.4 liters) when changing the oil with a filter. Change intervals vary by usage and climate, but Ford’s maintenance schedule commonly lists 10,000 miles (16,000 km) as a standard interval for normal driving; more frequent changes are advised under severe service, heavy towing, or extreme temperatures.
Practical tips for selecting oil
Choose a high-quality full-synthetic diesel oil that explicitly lists CK-4 or CJ-4 on the label and, if possible, is recommended by Ford (such as Motorcraft 5W-40 Diesel Engine Oil). Always verify the exact specification and capacity for your year and trim in the owner’s manual, and replace the oil filter with every oil drain.
Summary
For most Ford F-350s with the 6.7L Power Stroke, use a 5W-40 synthetic diesel engine oil that meets API CK-4 (CJ-4 if applicable). The engine capacity is about 11 quarts, and follow the vehicle’s maintenance schedule to maintain performance and longevity. When in doubt, choose Ford’s Motorcraft option or a CK-4/CJ-4 5W-40 from a reputable brand.
