Purpose and Specifications

LIQUI MOLY Special Tec F ECO 5W-20 is a fully synthetic motor oil engineered specifically for Ford EcoBoost engines. This premium oil meets Ford's WSS-M2C948-B specification and is designed to deliver three core benefits: superior engine cleanliness, reliable lubrication across temperature extremes, and improved fuel economy.

The 5W-20 viscosity rating means the oil flows instantly when you start your engine in cold weather (the '5W' part), then maintains protective thickness at normal operating temperatures around 100°C (the '20' part). This balance protects your engine from the moment you turn the key until you shut it down.

• Instant cold-start protection: Flows immediately at low temperatures, reducing engine wear during startup
• Outstanding engine cleanliness: Unique additive package prevents sludge and deposit buildup inside your engine
• Catalytic converter safe: Tested and approved for use with emissions systems—won't damage your cat
• Oxidation stability: Resists breakdown and thinning over time, maintaining protection longer
• Fuel economy support: Low-friction formulation helps your engine run more efficiently

When to Use / Replace?

Use LIQUI MOLY Special Tec F ECO 5W-20 whenever your Ford EcoBoost engine requires oil meeting the WSS-M2C948-B specification. Check your owner's manual for the exact recommendation for your model year and engine size.

Oil change intervals: Most modern Ford EcoBoost engines run 10,000 to 15,000 km (6,000 to 9,000 miles) between oil changes, though some newer models with advanced monitoring systems may extend to 20,000 km. Always follow your vehicle's service schedule.

Operating temperature range: This oil performs reliably from cold starts below 0°C up to sustained engine temperatures of 100°C and beyond, making it suitable for year-round driving in most climates.

Storage: Keep unopened containers in a cool, dry place. Properly stored, this synthetic oil maintains its quality for several years before opening.

Frequently Asked Questions

Q: Can I use this oil in non-Ford engines?
A: This oil is specifically formulated for Ford EcoBoost engines. While it may meet specifications for other vehicles, always verify your engine's requirements in the owner's manual before switching oils. Using the wrong viscosity or specification can affect performance and warranty coverage.

Q: Is synthetic oil really better than conventional?
A: Yes, for modern engines like EcoBoost. Synthetic oils like this one resist breakdown longer, flow better in cold weather, and provide superior protection at high temperatures. You'll typically get longer intervals between changes and better fuel economy.

Q: How do I know if this is the right oil for my Ford?
A: Check your owner's manual for the oil specification required. If it lists WSS-M2C948-B or WSS-M2C925-B, this LIQUI MOLY product is approved. You can also contact your Ford dealer with your vehicle's year, make, and engine size to confirm compatibility.