Understanding the specific requirements of your 2018 Ford E350’s 6.2L gasoline engine is the first step in maintaining its reliability. This engine, part of Ford’s modular big-block family, is known for its high torque output and durability, making it a popular choice for work vans and passenger carriers. However, large V8 engines like this one are prone to heat buildup and sludge accumulation if they are not properly maintained, especially when subjected to stop-and-go traffic or heavy towing. Synthetic motor oils are formulated to handle these stresses better than conventional oils, providing a stronger film strength that reduces friction and wear on critical internal components like camshafts and lifters.
The oil capacity for the 6.2L engine is 7.0 quarts when the oil filter is replaced. After refilling, it is essential to check the oil level to ensure the correct amount is in the pan, as overfilling or underfilling can lead to performance issues. For colder climates, if using E85 or M85 fuels, the recommended drain interval may require oil analysis for extension. The engine oil should be changed at intervals appropriate for the specific product used, with AMSOIL Signature Series 5W-30 offering protection for up to 25,000 miles under normal driving conditions. Regular changes, paired with high-efficiency filtration, ensure that contaminants are removed before they can cause damage to the engine’s tight tolerances.
Beyond the engine, the transmission system in the E350 Van requires attention to prevent costly failures. The vehicle is equipped with a 6-speed automatic transmission (6R140) which benefits greatly from synthetic automatic transmission fluid. These fluids are designed to withstand the rigors of heavy towing and the high operating temperatures that can occur during extended use. A full transmission fill for this unit is approximately 17.4 quarts, while an initial fill is around 10 quarts. Using a high-quality synthetic transmission fluid helps maintain proper shift quality and protects against sludge and wear, ensuring the drivetrain remains smooth and responsive throughout the vehicle’s life.
The rear differential also plays a crucial role in the vehicle’s overall performance. Depending on whether the axle is equipped with a limited-slip mechanism (M70FF with LS) or a standard differential, the choice of AMSOIL SEVERE GEAR® 75W-90 varies slightly in viscosity. For limited-slip differentials, a 75W-90 75W-110 or 80W-90 AMSOIL SEVERE GEAR® 80W-90 containing friction modifiers is recommended to ensure proper clutch engagement, while standard differentials can utilize an 80W-90 synthetic gear lube. Both options provide excellent protection against rust, corrosion, and thermal runaway, which are common failure points in heavy-duty applications. The capacity for these differentials is approximately 6.6 pints. Ensuring the correct synthetic gear lube is used not only protects the gears but also extends the life of the seals and bearings.
Fluids such as AMSOIL Passenger Car & Light Truck Antifreeze & Coolant and brake fluid are often overlooked but are vital for safety and engine health. The 2018 E350 uses a specific type of AMSOIL Propylene Glycol Antifreeze and Engine Coolant that should be compatible with all cooling system metals, gaskets, and hoses. AMSOIL offers formulations that provide up to 150,000 miles of protection, eliminating the need for frequent flushing. Similarly, brake fluid in this van should meet Ford specifications, and using a 100% synthetic AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid ensures superior performance in wet or hot conditions, improving braking responsiveness and safety.
About the Vehicle
The 2018 Ford E350 Van represents a significant milestone in the history of Ford’s full-size van lineup, specifically the E-Series. For decades, the E-Series has been the go-to vehicle for commercial fleets, law enforcement, and emergency services due to its rugged chassis and extensive customization capabilities. Unlike its crossover-based competitors, the E350 sits on a traditional body-on-frame chassis, which provides superior towing capacity and durability for heavy loads. The 6.2L V8 engine, often referred to as the Boss engine, was introduced to replace the older 6.8L V10, offering a balance of power and efficiency that meets modern emission standards without sacrificing the torque needed for hauling.
Drivers of the E350 often cite its versatility as a primary reason for ownership. It can be transformed from a passenger shuttle to a cargo hauler or a customized mobile workshop. The 2018 model year benefits from years of refinement in the E-Series platform, resulting in a vehicle that handles relatively well for its size, despite being a large, heavy van. The interior space is expansive, allowing for a wide array of aftermarket additions like shelving, lighting, and refrigeration units. This adaptability has cemented the E350’s reputation as a workhorse that can tackle any job assigned to it.
Despite its reliability, the E350 does face some common issues that owners can mitigate with proper maintenance. One frequent problem is oil consumption, particularly in high-mileage engines where piston rings may wear over time. Using a high-mileage AMSOIL 5W-30 100% Synthetic High-Mileage Motor Oil can help reduce sludge and improve ring seal, potentially lowering oil consumption rates. Another common issue is coolant system degradation, where hoses and gaskets can leak or fail over time. Regularly replacing the antifreeze with a long-life synthetic AMSOIL Passenger Car & Light Truck Antifreeze & Coolant can help prevent corrosion and leaks, extending the life of the cooling system.
Transmission issues, such as delayed shifting or harsh engagement, can also occur, often due to fluid breakdown or overheating. Since the E350 is frequently used for towing, the transmission operates under high stress. Switching to a premium AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid can help maintain fluid stability and lubrication under these conditions, reducing the risk of premature wear. Additionally, brake fade can be a concern during heavy downhill runs or stop-and-go traffic. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid with a higher boiling point can help maintain braking performance, reducing the risk of fade and ensuring consistent pedal feel. By addressing these specific areas with the right lubricants, owners can significantly enhance the longevity and reliability of their 2018 Ford E350 Van.