Ford 5W-40 Full Synthetic Diesel Engine Oil 1.25 U.S. Gal — API CJ-4, Power Stroke Approved

Ford Genuine Fluid XO-5W40 is a full synthetic diesel engine oil formulated for modern Ford Power Stroke and other heavy-duty diesel engines needing API CJ-4 protection.

This 1.25 U.S. gallon (4.73 L) container delivers a high-performance lubricant designed to meet the demands of both light- and heavy-duty diesel applications. Engineered to help protect pistons, bearings and exhaust aftertreatment systems, it complies with API CJ-4 service requirements for engines built to meet 2007 and later on-highway emission standards using ultra-low sulfur diesel (ULSD) fuel. Packaged in the United States and sized for service intervals, this Ford-branded oil is specified for many domestic and imported diesel platforms and recommended for Power Stroke-equipped vehicles.

Why choose SAE 5W-40 full synthetic for my diesel truck?

Full synthetic 5W-40 offers a balanced viscosity range that supports reliable cold starts and sustained film strength at operating temperature. That combination helps protect components across a wide temperature span and under heavy load or towing conditions.

• Cold-flow performance eases start-up in lower temperatures.
• High-temperature stability reduces breakdown during long hauls.
• Synthetic base stocks improve shear resistance under pressure.

Does this oil meet modern emission and engine standards?

This formula meets API CJ-4 specifications, which are required for many diesel engines designed to meet 2007 on-highway emissions with ULSD. It is suitable for use where CJ-4 is specified and aligns with the needs of exhaust aftertreatment systems used on those engines.

• API CJ-4-rated for 2007-and-newer emission designs.
• Compatible with engines using ultra-low sulfur diesel (ULSD).
• Recommended by Ford for Power Stroke diesel models.

Can I use this oil in non-Ford or mixed diesel fleets?

Yes — the formulation satisfies requirements of many domestic and imported diesel manufacturers, making it a practical choice for mixed fleets. Always consult the vehicle or engine manufacturer’s oil specifications before switching to ensure compatibility.

• Meets common diesel manufacturer requirements beyond Ford.
• Useful for mixed-fleet maintenance and standardized stocking.
• Not intended for gasoline engines with catalytic converters.

How is this product packaged and what are its physical details?

The oil is supplied in a 1.25 U.S. gallon (4.73 L) container made in the United States, sized for convenience during service. Package dimensions are compact for storage and transport, enabling easy handling in workshops and on job sites.

• Net volume: 1.25 U.S. gallons (4.73 liters).
• Made in the United States for quality control traceability.
• Package dimensions: approximately 14.0" height by 8.0" length for compact storage.

Who is this for? This Ford Genuine SAE 5W-40 full synthetic diesel motor oil is aimed at owners and technicians of Ford Power Stroke diesel trucks, fleet managers running mixed diesel fleets, and anyone seeking a CJ-4-rated synthetic oil for light- to heavy-duty diesel service intervals. If you operate diesel vehicles built for 2007-era and newer emissions equipped with ULSD and require a robust synthetic lubricant, this product is intended as a direct-fit option — just verify your engine maker’s required viscosity and API class before use. Do not use in gasoline engines equipped with catalytic converters.