Maintaining the 2018 Lincoln MKC equipped with the 2.3L EcoBoost turbocharged engine requires precision and high-quality lubricants to ensure longevity and peak performance. This vehicle relies on specific fluid viscosities and chemical formulations to handle the thermal stress of forced induction and the demands of its sophisticated powertrain. Using the correct AMSOIL synthetic lubricants provides superior protection against wear, deposits, and extreme temperatures, ensuring the engine and drivetrain components operate efficiently for miles to come.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil – Offers unsurpassed protection for up to 25,000 miles and 75% more engine protection against horsepower loss and wear, ideal for the turbocharged 2.3L engine.
- AMSOIL Extended-Life 5W-30 100% Synthetic Motor Oil – Delivers up to 20,000 miles of protection with 37% more cleaning power to help keep the engine running smoother and prevent Low-Speed Pre-Ignition (LSPI).
- AMSOIL Oil Filter – Provides 99 percent filtering efficiency at 20 microns, offering greater capacity for contaminants than competing filters to reduce engine wear.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique phosphate-, nitrate-, and silicate-free OAT formulation that protects cooling system metals, gaskets, and hoses for up to 150,000 miles or 5 years.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands heavy towing, elevated temperatures, and challenging terrain while maintaining fluidity in sub-zero conditions for the 6-speed automatic transmission.
- AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube – Specifically formulated for the transfer case (PTU) to control thermal runaway and reduce operating temperatures under severe service conditions.
- AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube – Designed for the rear differential to provide advanced protection against wear and rust while meeting Ford specifications for limited-slip applications.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Ensures excellent ABS and traction-control responsiveness with a stable viscosity over a wide temperature range to improve braking safety.
The 2.3-liter EcoBoost engine in the 2018 MKC is a powerhouse of efficiency and performance, but it places unique demands on lubrication. Turbochargers spin at incredible speeds, generating intense heat that can degrade conventional oils rapidly. AMSOIL Signature Series 5W-30 is engineered to withstand this thermal stress, providing a robust film strength that shields critical components even when the ambient temperature drops or the vehicle is pushed hard. For owners of vehicles with over 75,000 miles, the High-Mileage variant offers enhanced seal conditioning to reduce oil consumption and sludge buildup.
Fluid capacity is a critical detail for proper maintenance. The 2018 Lincoln MKC 2.3L engine requires 5.7 quarts of oil when the oil filter is installed. After a refill, it is essential to check the oil level to ensure it is correct, as overfilling can cause foaming and pressure issues. The oil drain plug should be torqued to 20 ft/lbs to prevent leaks or stripped threads. Beyond the engine, the cooling system holds a significant amount of fluid; the total capacity for the antifreeze and coolant is 8.1 quarts. Regular coolant changes are vital to prevent corrosion within the aluminum engine block and head, ensuring the thermostat and water pump function correctly throughout the vehicle’s life.
The automatic transmission, specifically the 6-speed 6F35 unit, requires a full fluid capacity of 9 quarts for a total fill. While the engine operates under high heat, the transmission also endures significant stress, particularly if the vehicle is used for towing or frequent stop-and-go driving in urban environments. Using a synthetic transmission fluid like AMSOIL Signature Series Fuel-Efficient ensures that the fluid remains fluid in extreme cold while maintaining stability at high operating temperatures. This prevents the shudder and harsh shifting that can occur as transmission fluid degrades, extending the life of the torque converter and clutch packs.
For the drivetrain, the transfer case (PTU) is a critical component in the AWD system. It requires SAE 75W-140 synthetic rear axle lubricant, with a capacity of just 1.1 pints. The drain and fill plugs on the PTU require a torque of 33 ft/lbs. This specific viscosity is crucial because it contains the friction modifiers needed for the limited-slip differential while resisting thermal runaway, a common failure mode in PTUs where the fluid breaks down and causes overheating. For the rear differential, the capacity is 2.4 pints of SAE 80W-90 gear lube meeting Ford specifications. AMSOIL SEVERE GEAR® 80W-90 provides the necessary protection against wear and rust, ensuring smooth operation in all weather conditions.
Brake fluid is often overlooked until a problem arises, but maintaining high-quality DOT 3 and DOT 4 fluid is essential for safety. The Lincoln MKC uses Motorcraft DOT 4 LV High Performance Brake Fluid or an equivalent meeting WSS-M6C65-A2 standards. AMSOIL’s synthetic brake fluid is designed to resist boiling and absorb less moisture than conventional glycol-based fluids, ensuring consistent pedal feel and preventing corrosion in the braking system’s metal components. This stability ensures that the anti-lock braking system and traction control systems function optimally, providing confidence in any driving scenario.
About the Vehicle
The 2018 Lincoln MKC represents a significant milestone in the brand’s strategy to compete directly with the best European luxury compact SUVs. Built on the same compact architecture as the Ford Escape, the MKC was designed to offer a more refined and upscale driving experience without sacrificing practicality. The vehicle’s interior is a standout feature, characterized by high-quality soft-touch materials, available leather upholstery, and a suite of advanced technology that includes the SYNC 3 infotainment system and available Co-Pilot360 assist features. The design language follows Lincoln’s signature “floating roof” aesthetic, with a distinctive chrome grille and sleek LED lighting that commands attention on the road.
Under the hood, the 2018 model year offered two engine choices, but the 2.3-liter EcoBoost four-cylinder was the heart of the powertrain for many owners. This turbocharged engine delivers an impressive balance of power and fuel economy, producing around 245 to 250 horsepower depending on the specific calibration. For those seeking even more performance, the MKC Reserve and the upcoming 2018.5 redesign introduced a high-output version of this engine, boosting power to roughly 280 horsepower. This surge in torque makes the MKC surprisingly quick for its class, offering a spirited driving character that belies its status as a utility vehicle. The powertrain is mated to a 6-speed automatic transmission that is tuned for smooth shifts, though the turbocharger introduces some unique considerations for maintenance.
Owners typically favor the MKC for its blend of luxury and capability. The available all-wheel-drive system provides excellent traction in adverse weather, making it a popular choice in regions with harsh winters. The suspension is tuned to absorb road imperfections comfortably, offering a ride quality that rivals more expensive German competitors. However, the complexity of the 2.3L EcoBoost engine and the all-wheel-drive system can lead to specific issues over time if not maintained properly. One common concern among enthusiasts is the potential for oil dilution, where gasoline enters the crankcase, a phenomenon that can occur if the turbocharger does not warm up quickly or the engine does not reach optimal operating temperature. This highlights the importance of using high-performance synthetic oils that resist fuel thinning and maintain viscosity under these conditions.
Another known challenge for the 2018 MKC is related to the Power Transfer Unit (PTU) in the AWD models. This component, which sends power to the rear wheels, has been known to overheat and fail, often due to the breakdown of the gear lubricant under high stress. Using a premium synthetic gear lube specifically designed to resist thermal runaway can be an effective preventative measure for long-term reliability. Additionally, the engine’s turbocharger requires robust lubrication to prevent bearing wear and oil coking, especially if the vehicle is driven frequently in stop-and-go traffic. Finally, owners have reported issues with spark plugs and the ignition coils in high-mileage examples, often exacerbated by carbon buildup on the fuel injectors or intake valves, which can be mitigated with high-quality fuel additives and proper maintenance schedules.
In summary, the 2018 Lincoln MKC 2.3L is a sophisticated vehicle that rewards careful maintenance. By adhering to the recommended fluid capacities and utilizing top-tier synthetic lubricants, owners can ensure their vehicle delivers the premium experience it was designed to provide. Whether navigating city streets or venturing onto a rugged trail, the right fluids keep the engine, transmission, and drivetrain operating at peak efficiency, safeguarding the investment for years to come.