What oil to use in a 2018 Ford Fusion 2.7L

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The 2018 Ford Fusion equipped with the 2.7-liter EcoBoost V6 engine demands a lubrication strategy that addresses both high-performance driving conditions and long-term reliability. This turbocharged powerplant operates under significant thermal stress, particularly during acceleration or extended highway cruising. Utilizing synthetic lubricants formulated specifically for this engine ensures optimal protection against wear, reduces the buildup of harmful deposits, and maintains viscosity stability across extreme temperature ranges. Proper maintenance extends the service intervals and preserves engine power.

Recommended AMSOIL Products

Understanding the Engine Oil Requirements for the 2018 Fusion 2.7L

The 2018 Ford Fusion’s 2.7-liter V6 EcoBoost engine is a high-output powerplant that pushes the boundaries of what a standard four-cylinder engine can do. While the engine displacement is modest, the turbocharging system generates significant heat and cylinder pressure. This environment requires a lubricant that can maintain a stable film strength under high shear conditions. Using the wrong viscosity grade can lead to increased oil consumption, reduced fuel economy, and premature wear on critical components like the turbocharger bearings and variable camshaft timing (VCT) phasers.

For this specific engine, the manufacturer specifies a 5W-30 viscosity grade for most operating conditions. The cooling capacity of the engine oil is equally critical. The AMSOIL Signature Series oils listed above are engineered to resist the breakdown that occurs when oil is subjected to the extreme heat generated by the turbocharger. This product stands out for drivers who frequently push their vehicles hard, offering a film strength that is significantly higher than the industry standard. This extra layer of protection helps mitigate horsepower loss and wear, ensuring the engine remains responsive for years of driving.

The 2018 Fusion also comes with a 6.0-quart capacity for the engine when the filter is replaced. It is crucial to refill to the correct level and verify the oil level with the dipstick after the refill process is complete. Overfilling can cause foaming and increased pressure, while underfilling can lead to insufficient lubrication. For vehicles with AMSOIL High-Mileage Motor Oil, typically defined as over 75,000 miles, the high-mileage formulation becomes a vital tool in maintenance. Its unique chemistry helps to rejuvenate aging seals and reduces oil consumption, keeping the engine cleaner and running more efficiently than conventional oils.

Cooling System and Antifreeze Specifications

Maintaining the cooling system on the Fusion is just as important as the lubrication of the engine. The cooling system holds approximately 11.8 quarts of fluid. If the AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is not properly maintained, the engine can overheat, leading to warped heads or gasket failures. The standard recommendation involves using an OAT (Organic Acid Technology) formulation, which is compatible with the aluminum components in the engine block and radiator. AMSOIL offers both a pre-mixed 50/50 antifreeze and a concentrated version.

The pre-mixed antifreeze is a convenient solution that eliminates the need for measuring and mixing, ensuring the correct freeze and boil-over protection. It contains no phosphates, nitrites, or borates, which protects the longevity of the cooling system metals and hoses. For those who prefer to mix their own or need a solution for heavy-duty use, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers extended life and superior corrosion protection. This product is particularly effective in environments where extreme temperature fluctuations are common, providing a stable chemical barrier against rust and erosion.

Transmission and Differential Lubrication

The 2018 Fusion is available with different transmission configurations, including the 6F55 and 6F35 automatic transmissions. These six-speed units require a fluid that can handle the friction demands of modern clutches while maintaining viscosity under load. The AMSOIL Signature Series Fuel-Efficient Automatic Transmission Fluid are formulated to withstand the rigors of heavy towing, elevated temperatures, and challenging terrain. They remain fluid even in sub-zero conditions, ensuring smooth shifting and reserve protection during periods of heavy use. The total fill capacity for the 6F55 transmission is 11.6 quarts, while the 6F35 requires 9 quarts.

Beyond the transmission, the power transfer unit (PTU) in all-wheel-drive models requires specific attention. The PTU is a known weak point in some Ford Fusions, prone to overheating if not properly lubricated. The recommended lubricant for the PTU is a SAE 75W-140 synthetic rear axle lubricant. AMSOIL SEVERE GEAR® 75W-140 is specifically designed to control thermal runaway in these units. It contains friction modifiers for limited-slip applications and helps reduce operating temperatures, significantly extending the life of the transfer case components. The rear differential, which typically holds 1.1 pints, also benefits from AMSOIL SEVERE GEAR® 80W-90, ensuring that the gears remain well-lubricated and protected against wear in all weather conditions.

Additional Maintenance Products and Care

A complete maintenance regimen for the 2018 Ford Fusion extends beyond oil and fluids. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid is often overlooked but is critical for safety. This fluid provides excellent responsiveness for ABS and traction-control systems. It maintains a stable viscosity over a wide temperature range, preventing the boiling of brake fluid during hard stops or spirited driving.

Fuel system maintenance is another key aspect of keeping the EcoBoost engine running at peak performance. Carbon buildup on direct injection (GDI) injectors can lead to rough idling and reduced power. AMSOIL P.i.® Performance Improver is a gasoline additive that helps restore GDI fuel injectors to 100% flow rate after just one tank of fuel. This product not only restores horsepower but also improves fuel economy and reduces the need for higher-octane fuel. It is compatible with capless fuel systems, making it a versatile choice for modern vehicles.

Seasonal Storage and Protection

For owners who may not drive their Fusion during the winter months or for extended periods, proper storage is essential. AMSOIL Gasoline Stabilizer helps keep fuel fresh for up to 12 months, protecting the fuel system against varnish and gum buildup caused by ethanol corrosion. Additionally, AMSOIL Engine Fogging Oil provides a highly effective rust preventive designed to protect internal engine components during storage or long periods of inactivity. This is ideal for any vehicle with a four-stroke engine that will sit for extended times.

Care for the vehicle’s exterior and interior is also part of a holistic approach to ownership. Products like the AMSOIL Miracle Wash Waterless Wash and Wax Spray offer a convenient way to clean and protect the vehicle’s finish without the need for water. For those who need a powerful cleaner, the AMSOIL Heavy-Duty Degreaser effectively dissolves oil, tar, and grime from engine surfaces. These care products ensure that the vehicle not only runs well but also looks and performs its best.

Vehicle Background: The 2018 Ford Fusion

The 2018 Ford Fusion represents the continued evolution of Ford’s mid-size sedan lineup, a vehicle that has long been a staple in the American automotive market. Built on the Ford D4 platform, the Fusion is known for its balanced ride quality, efficient powertrains, and a sophisticated interior that competes well with European counterparts. The model line originated as a response to the need for a fuel-efficient, stylish family sedan that could also serve as a capable executive vehicle.

The 2018 model year brought refined engineering to a vehicle that was already well-regarded for its handling and ride comfort. The Fusion was designed to appeal to a broad demographic, offering a range of engine options that catered to different needs. The base models featured efficient four-cylinder engines, while the EcoBoost variants, including the 2.7-liter V6 in this guide, provided the power needed for highway passing and light towing. This engine was part of Ford’s broader strategy to use smaller displacement engines with turbocharging to deliver performance comparable to larger naturally aspirated engines while maintaining better fuel economy.

Owners of the 2018 Fusion appreciate its driving dynamics, which are often described as “car-like” with a smooth and composed feel. The interior is spacious, offering ample room for passengers and cargo, making it a practical choice for families. The vehicle’s reputation for reliability, particularly when maintained with high-quality synthetic fluids, has made it a popular choice in the used car market. The Fusion’s platform shares engineering DNA with other Ford vehicles, contributing to a sense of robustness and durability.

Despite its strengths, the 2018 Fusion is not without its known issues, and using the correct AMSOIL lubricants can help mitigate or prevent several common problems. One frequent issue with the EcoBoost engines is the tendency for carbon buildup on the intake valves, which can affect performance and fuel economy. The use of fuel additives like AMSOIL P.i.® can help keep these systems clean and restore lost power. Another common concern is premature wear in the power transfer unit (PTU) of the all-wheel-drive models, which can lead to failures if the lubricant breaks down. Using AMSOIL AMSOIL SEVERE GEAR® 75W-140 provides the necessary thermal stability to prevent this thermal runaway.

Oil consumption is another issue that can affect some of these vehicles as they age. The high-mileage formulation of AMSOIL motor oil, with its enhanced anti-wear additives and unique chemistry, is specifically designed to address this by rejuvenating seals and reducing oil burning. Additionally, some owners report issues with the timing chain tensioner, which can be sensitive to oil quality. Maintaining a strict schedule with a high-quality synthetic oil that offers superior film strength can help ensure the timing chain remains properly tensioned, preventing the noise and potential engine damage associated with chain stretch. By addressing these potential weaknesses with the right products, owners can extend the life of their 2018 Ford Fusion and keep it running smoothly for many more miles.

Conclusion

The 2018 Ford Fusion with the 2.7L engine is a capable and refined vehicle that rewards owners who prioritize high-quality maintenance. By selecting the right AMSOIL synthetic lubricants for the engine, transmission, cooling system, and drivetrain, drivers can ensure their vehicle operates at its peak efficiency. The extensive range of products available allows for a complete maintenance solution, from protecting the engine against high heat to ensuring the brakes respond instantly. Whether the vehicle is driven daily, used for towing, or kept in storage, the right fluids make a significant difference in longevity and performance.

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