Keeping your 2009 Ford E350 with the 6.8L 10-cylinder engine running smoothly requires more than just a quick stop at the local store for generic supplies. This substantial van, a staple of the Ford E-Series platform, demands fluids that can withstand heavy loads, extreme temperatures, and the rigors of daily commercial or personal use. The V-10 engine, known for its high displacement and durability, operates best with lubricants specifically engineered to reduce wear and maintain flow in all conditions. Using the correct viscosity and filtration system is essential for maximizing engine life, fuel economy, and overall reliability.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil – Provides unsurpassed engine protection and can extend oil change intervals up to 25,000 miles.
- AMSOIL Extended-Life 5W-20 100% Synthetic Motor Oil – Offers extended protection for up to 20,000 miles with superior cleaning power.
- AMSOIL Oil Filter – Delivers 99% efficiency at 20 microns and greater capacity for contaminants to reduce engine wear.
Proper lubrication is the lifeblood of the 2009 Ford E350’s robust 6.8-liter Triton V-10 engine. This powerplant is designed to tow, haul, and transport passengers or cargo with authority, placing significant stress on the internal components. Without high-quality synthetic oil, the engine is vulnerable to breakdown at the molecular level under high heat and heavy loads. AMSOIL products are formulated to resist thermal breakdown and oxidation, ensuring that a protective film remains on critical engine parts. This protection is vital for preventing horsepower loss and minimizing wear over the vehicle’s lifespan. When you choose the right oil, you are not just changing a fluid; you are investing in the mechanical integrity of one of the most powerful and reliable engines in the van class.
Engine Oil and Filtration Specifications
For the 6.8L 10-cylinder engine found in your 2009 Ford E350 Van, the manufacturer specifies a 5W-20 viscosity grade. The oil capacity for this engine, including the filter change, is 6.9 quarts. After refilling, it is crucial to check the oil level to ensure it is within the proper operating range. The oil drain plug should be torqued to 17 ft/lbs to prevent leaks or damage. Owners have four primary options for oil selection depending on their driving habits and maintenance philosophy.
For those seeking the absolute maximum performance and extended intervals, the AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil is the top choice. This oil is backed by testing that shows 75% more protection against horsepower loss and wear compared to leading conventional oils. It is trusted by professional engine builders and offers guaranteed protection for up to 25,000 miles or one year. If you prefer a balance of extended protection and cleaning power, the AMSOIL Extended-Life 5W-20 100% Synthetic Motor Oil provides up to 20,000 miles of protection. It features enhanced cleaning power to keep the engine running smoother for longer.
For vehicles that have surpassed 75,000 miles, the AMSOIL 5W-20 100% Synthetic High-Mileage Motor Oil is specifically designed with boosted detergents and enhanced anti-wear additives. This formulation can reduce sludge by up to 67% and is guaranteed for 12,000 miles. Finally, the AMSOIL OE 5W-20 100% Synthetic Motor Oil is an excellent budget-friendly option that still outperforms conventional oils, providing protection against sludge and deposits.
Matching the oil with a high-quality filter is equally important. The AMSOIL Oil Filter is engineered to allow lower restriction, keeping engine parts lubricated while capturing wear-causing contaminants. It offers greater capacity than competing filters, which helps the engine last longer. For those who prefer aftermarket branded filters, the WIX Oil Filter and the premium WIX XP Oil Filter are also recommended for this vehicle.
Transmission and Drivetrain Maintenance
The 2009 E350 Van typically comes equipped with the 5-speed 5R110W automatic transmission. Maintaining this transmission is critical for smooth shifting, especially when the van is under load. The total fill capacity for the transmission is approximately 18.7 quarts, with an initial fill capacity of 7.4 quarts. Using a fluid that can withstand the heat generated during heavy towing and elevated temperatures is essential. The AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid is designed to remain fluid in sub-zero temperatures and withstand the rigors of heavy towing. It provides reserve protection during heavy use and abuse.
Alternatively, the AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid offers excellent protection against wear and resistance to harmful sludge. For power steering systems that require MERCON V fluid, the AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid or the AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid can be used effectively. When servicing the transmission, a filter change is recommended. The WIX Transmission Filter features premium media that offers improvements over original equipment filters.
The differential and transfer case lubrication depends on the specific axle configuration of the van. For standard Dana 60-1U or Dana 70-2U/70-TR rear differentials, the required lubricant is a GL-5 rated fluid with an 80W-90 viscosity. If the vehicle is equipped with a limited-slip differential, the fluid requirement shifts to a 90 weight lubricant. In this case, the AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube contains friction modifiers necessary for limited-slip applications. For heavier towing or hotter climates, a heavier viscosity like 75W-90 or 75W-110 may be beneficial. The AMSOIL SEVERE GEAR® 75W-90 and AMSOIL SEVERE GEAR® 75W-110 both control thermal runaway and protect against rust and corrosion while reducing operating temperatures.
Cooling System and Brake Fluid
Proper cooling is essential for the longevity of the V-10 engine. The coolant capacity varies based on equipment; with an auxiliary rear heater, the capacity is 30.4 quarts, and with a standard heater, it is 32.5 quarts. The AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a phosphate, nitrate, nitrite, silicate, borate, and amine-free ethylene glycol formulation. It offers protection up to 150,000 miles or 5 years and is compatible with all cooling system metals. For those who prefer a concentrated antifreeze, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant provides even longer service life, suitable for heavy-duty applications with up to 1,000,000 miles of protection.
Brake safety is paramount for a vehicle of this size. The recommended brake fluid is DOT 3, specifically meeting Ford specification WSS-M6C65-A1. The AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid offers excellent responsiveness for ABS and traction-control systems. It maintains a stable viscosity over a wide temperature range, ensuring reliable braking performance in both extreme heat and cold.
Seasonal Storage and Fuel Care
For owners who store their E350 Van during off-seasons, protecting the fuel system is critical. Ethanol-blended fuels can degrade quickly, leading to varnish and gum buildup. The AMSOIL Gasoline Stabilizer helps keep fuel fresh for up to 12 months. During long-term storage, the AMSOIL Engine Fogging Oil provides a protective barrier against rust on internal engine components. For daily driving, maintaining peak engine performance is aided by the AMSOIL P.i. Performance Improver Gasoline Additive. This additive restores up to 14% horsepower and can restore GDI fuel injectors to 100% flow rate, reducing the need for costly higher-octane fuel.
Vehicle Background and History
The 2009 Ford E350 Van stands as a testament to American automotive engineering, representing the final generation of the iconic Ford E-Series platform before its transition to a chassis-cab configuration in later years. This era of the E350 was widely recognized for its rugged durability and versatility, serving roles that ranged from religious organizations and schools to large family vehicles and heavy-duty commercial haulers. Under the hood, the 6.8L V-10 engine, often referred to as the Triton V-10, was the workhorse that allowed this van to carry significant payloads with relative ease. Unlike smaller V-8 engines found in light trucks, the V-10 provided the torque necessary to pull trailers and navigate steep inclines without straining the drivetrain.
The E350’s chassis was derived from the Ford Super Duty truck line, lending it a solid, truck-like feel that inspired confidence among drivers. Whether used for carrying passengers in a coach configuration or hauling equipment for business, the vehicle was designed to be a reliable workhorse rather than a luxury cruiser. Its straightforward design meant that repairs were often accessible, and parts were readily available, contributing to its long-term ownership appeal. The 2009 model year specifically benefited from refinements made to the drivetrain and suspension systems, offering a smoother ride than its predecessors while maintaining the capability required for serious work. Owners of this vehicle often praise its spacious interior and the sheer power of the 10-cylinder engine, making it a favorite for those who need to transport large loads or groups of people with safety and reliability as top priorities.
Additional Care and Protection
Beyond the essential fluids, keeping the E350 in top condition involves regular maintenance of various other systems. For lubrication of chassis points, the AMSOIL Synthetic Multi-Purpose Grease resists thermal degradation and provides outstanding low-temperature pumpability. To protect the vehicle’s metal surfaces from salt, moisture, and chemical corrosion, the AMSOIL Heavy-Duty Metal Protector leaves a long-lasting wax-like coating. For rusted or frozen components, the AMSOIL MP Metal Protector helps cut through rust and stop squeaks. Exterior maintenance is simplified with the AMSOIL Silicone Spray, which protects rubber and seals without attracting dirt, and the AMSOIL Brake and Parts Cleaner effectively removes oil and grease from brake components.
For those who maintain their own vehicles, a complete cleaning and protection regimen is available. The AMSOIL Power Foam® Carburetor and Induction-System Cleaner maximizes horsepower by cleaning deposits from the intake system. The exterior can be washed and waxed with the AMSOIL Miracle Wash Waterless Wash and Wax Spray, which repels dust and light dirt. Interior surfaces benefit from the AMSOIL Interior Detailer, which offers UV protection and traps odors. Whether you are cleaning engine bays with the AMSOIL Engine Degreaser or protecting glass with the AMSOIL Glass Cleaner, these products ensure that your E350 remains as functional as it is reliable.