The 2018 Lincoln Continental with the 3.7L 6-cylinder engine represents the pinnacle of American luxury, requiring a maintenance regimen that matches its sophisticated engineering. To ensure this vehicle delivers its renowned smooth ride and durability, using the correct synthetic lubricants is non-negotiable. This guide provides a comprehensive breakdown of the exact fluids and filters needed to maintain peak performance, from the initial cold start to long-term wear protection.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil – The premier choice for maximum engine protection and the ability to extend oil change intervals up to 25,000 miles.
- AMSOIL Extended-Life 5W-20 100% Synthetic Motor Oil – A versatile option that offers 37% more cleaning power and 20,000 miles of protection, ideal for drivers seeking a balance of performance and value.
- AMSOIL OE 5W-20 100% Synthetic Motor Oil – A cost-effective solution that outperforms conventional oils while meeting original equipment manufacturer specifications.
- AMSOIL 5W-20 100% Synthetic High-Mileage Motor Oil – Formulated specifically for vehicles with over 75,000 miles, featuring a unique chemistry to reduce sludge and control oil consumption.
- AMSOIL Oil Filter – Provides 99% filtration efficiency at 20 microns, allowing for lower restriction and greater capacity for wear-causing contaminants compared to standard filters.
- WIX XP Oil Filter – A premium aftermarket alternative featuring media that offers improvements over original equipment manufacturer-branded filters.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid (OAT) formulation providing protection up to 150,000 miles or 5 years, safe for all cooling system metals.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option that greatly surpasses standards for metallic corrosion and erosion protection in passenger cars.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Designed to withstand the rigors of heavy towing and elevated temperatures, ensuring fluid performance in sub-zero conditions.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – A fuel-efficient fluid that provides essential wear protection for automatic transmissions.
- AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube – The recommended lubricant for the transfer case, containing friction modifiers for limited-slip applications and preventing thermal runaway.
- AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube – The specific requirement for the rear differential, meeting Ford specifications while offering advanced wear protection.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Ensures excellent ABS and traction-control responsiveness with stable viscosity over a wide temperature range.
Engine Oil Specifications and Maintenance
The heart of the 2018 Lincoln Continental, the 3.7L 6-cylinder engine (Engine Code [K]), requires specific attention to viscosity and capacity to operate at its highest potential. The manufacturer specifies a 5W-20 viscosity grade for normal driving conditions. For the initial oil change or a routine maintenance cycle, the total capacity is 6.0 quarts when the oil filter is replaced. It is crucial to check the oil level after refilling to ensure the correct volume is present, as underfilling can lead to inadequate lubrication and overfilling can cause foaming.
When the ambient temperature drops below -29°C (-20°F), or in extreme cold climates where temperatures hit -30°C, the use of 0W-20 oil meeting WSS-M2C947-A standards is recommended for better cold starts. Regardless of the choice, adhering to the torque specification of 20 ft-lbs for the oil drain plug is essential to prevent leaks or damage to the plug threads. AMSOIL synthetic oils exceed industry standards, providing 75% more engine protection against horsepower loss and wear compared to conventional oils. For owners looking to maximize their maintenance intervals, the Signature Series 5W-20 100% Synthetic Motor Oil allows for oil change intervals up to 25,000 miles, while the Extended-Life 5W-20 100% Synthetic Motor Oil provides up to 20,000 miles of protection.
Filter Selection and Filtration Efficiency
Choosing the right oil filter is just as critical as selecting the correct oil. The 2018 Continental benefits significantly from high-efficiency filtration that captures microscopic contaminants. The AMSOIL Oil Filter is engineered to offer filtering efficiency of 99% at 20 microns, a standard significantly higher than many competing products. This high efficiency helps reduce engine wear by capturing small, wear-causing particles that bypass standard filters. Furthermore, the AMSOIL filter allows for lower oil restriction, keeping engine parts properly lubricated even during high-demand situations.
For those who prefer established aftermarket brands, the WIX XP Oil Filter and the standard WIX Oil Filter are also compatible with this vehicle. The WIX XP variant is considered premium, offering media improvements over standard OEM-branded filters. Using a filter with extended service life and greater capacity for contaminants ensures that the synthetic oil remains cleaner for longer, supporting the extended drain intervals available with AMSOIL motor oils.
Transmission and Drivetrain Fluids
The automatic transmission in the 2018 Lincoln Continental is a 6-speed unit (6F50). For a total fill, this system requires 11.6 quarts, though a standard fluid exchange will require less. Protecting the transmission from heat-related degradation and wear is vital for maintaining the smooth shifting character the Continental is known for. The AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid is designed to handle heavy towing, elevated temperatures, and challenging terrain without losing its fluidity in extreme cold. It provides reserve protection during abuse, ensuring the transmission operates smoothly regardless of the driving load.
In the drivetrain, the transfer case (PTU) requires a specific synthetic lubricant. The factory specification calls for SAE 75W-140 synthetic rear axle lubricant. For this component, AMSOIL SEVERE GEAR 75W-140 100% Synthetic Gear Lube is the ideal solution. It controls thermal runaway, a common issue in transfer cases, and protects against rust and corrosion. The capacity for the transfer case is 1.1 pints. Proper torque specifications include 9 ft-lbs for the drain plug and 15 ft-lbs for the fill plug to ensure a secure seal. The rear differential, conversely, requires a SAE 80W-90 lubricant meeting Ford specification WSP-M2C197-A. The AMSOIL SEVERE GEAR 80W-90 100% Synthetic Gear Lube fills this need perfectly, with a capacity of 2.5 pints, offering advanced wear protection and long oil life.
Cooling and Brake System Fluids
Maintaining the cooling system is essential for the longevity of the 3.7L engine, which can be sensitive to overheating under load. The cooling system capacity is approximately 10.2 quarts. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a 50/50 pre-mix formulation that protects all cooling system metals, gaskets, and hoses. It is free of phosphates, nitrates, and silicates, making it compatible with a wide variety of vehicle cooling systems. For those who prefer a concentrated solution, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers protection up to 150,000 miles and greatly surpasses standards for metallic corrosion and erosion.
For the braking system, the 2018 Lincoln Continental requires brake fluid that meets Motorcraft DOT 4 LV High Performance Brake Fluid specifications (P/N PM-20) or equivalent meeting WSS-M6C65-A2. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid is an excellent alternative. It provides superior high-temperature stability compared to conventional fluids, ensuring consistent pedal feel and responsiveness for ABS and traction control systems. This synthetic fluid resists moisture absorption better than standard fluids, which helps prevent boiling and vapor lock in the brake lines.
About the 2018 Lincoln Continental
The 2018 Lincoln Continental marked a significant return to form for the iconic sedan, reimagining the classic American flagship for a modern luxury market. This model represents a substantial departure from its predecessor, adopting a design language that blends contemporary aesthetics with the heritage of the brand. Under the hood, the 3.7L V6 engine provides a refined power delivery that prioritizes smoothness and efficiency, making it a comfortable choice for daily commuting and long-distance travel. The vehicle is built on the Ford CD4 platform, which also underpins other premium vehicles, ensuring a solid foundation for its independent suspension and handling dynamics.
Owners of the 2018 Continental typically value its plush interior, advanced technology features, and quiet ride quality. The vehicle’s market position was to compete with European luxury sedans by offering comparable comfort at a competitive price point. The 3.7L engine, while naturally aspirated, is known for its smooth operation, though like many modern engines, it requires high-quality lubrication to maintain its performance characteristics over time. The use of synthetic lubricants is particularly beneficial for this vehicle because it helps maintain the engine’s seals and gaskets, reducing the risk of oil leaks which can be a concern as the vehicle ages. The Continental is also equipped with sophisticated electronics that rely on clean, stable brake fluid and transmission fluid to function correctly, making fluid maintenance a key part of ownership.
While the 2018 Continental is a robust vehicle, owners may encounter a few common issues over time that proper lubrication can help mitigate or resolve. One potential area of concern is oil consumption or leakage, which can be exacerbated by degraded seals. Using a high-mileage synthetic oil like the AMSOIL 5W-20 100% Synthetic High-Mileage Motor Oil can help condition seals and reduce oil loss. Another common issue in vehicles of this era and platform is the accumulation of carbon deposits in the fuel system and intake valves, particularly if the vehicle is used for short trips. The use of AMSOIL P.i. Performance Improver gasoline additive can help restore injectors to 100% flow rate and reduce carbon buildup, improving fuel economy and throttle response. Additionally, transmission fluid degradation can lead to shift concerns or harshness. Regularly refreshing the transmission fluid with a premium synthetic fluid can maintain the fluid’s friction properties and prevent the buildup of sludge that affects shifting smoothness. Finally, cooling system efficiency is critical for this engine. Over time, coolant can lose its anti-corrosion properties, leading to potential hot spots or corrosion in the radiator and heater core. Using a high-quality antifreeze like AMSOIL’s OAT formulation ensures long-term protection against rust and corrosion, keeping the cooling system effective for years.
Maintaining the 2018 Lincoln Continental with the right synthetic fluids ensures that this luxury sedan continues to provide the comfortable and reliable experience that owners expect. By adhering to the recommended fluid specifications and utilizing high-performance AMSOIL products, drivers can extend the life of their vehicle and enjoy its performance for the long haul.