Maintaining your 2021 Ram Promaster City with the 2.4L 4-cylinder engine (Code [B] ED6 B) requires precise lubrication to ensure longevity and performance. This compact van is built for commercial and personal use, facing demands that range from stop-and-go city driving to heavier loads. The correct synthetic oils and filters provide superior protection against wear, sludge, and extreme temperatures, ensuring your vehicle remains reliable mile after mile. Selecting the right fluids is not just about meeting a specification; it is about providing an insurance policy for your engine and transmission components.
Recommended AMSOIL Products
- AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil – Provides unsurpassed engine protection and up to 25,000 miles of coverage. It offers 75% more engine protection against horsepower loss and wear, making it ideal for turbocharged engines and extended driving conditions.
- AMSOIL Extended-Life 0W-20 100% Synthetic Motor Oil – Offers extended-life protection for up to 20,000 miles. With 37% more cleaning power than OE oils, it helps keep the engine running smoother for longer and protects against Low-Speed Pre-Ignition (LSPI).
- AMSOIL OE 0W-20 100% Synthetic Motor Oil – Designed to outperform conventional oils and meets OEM requirements. This oil fights sludge and deposits effectively with a 100% synthetic formulation and guarantees up to 10,000 miles of protection.
- AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil – Specifically formulated for vehicles with over 75,000 miles. It features a boosted detergent package and reduced sludge by 67%, helping engines last longer and perform better with guaranteed protection for 12,000 miles.
- AMSOIL Oil Filter EA15K50-EA – Provides 99% filtration efficiency at 20 microns, allowing for lower restriction to keep engine parts lubricated. It offers greater capacity for small, wear-causing contaminants than competing filters, reducing engine wear.
- WIX Oil Filter 57060-EA – A premium alternative featuring media improvements over standard OEM-branded filters, ensuring reliable filtration and protection for your engine.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique phosphate, nitrate, and silicate-free OAT formulation that protects cooling system metals, gaskets, and hoses. It offers protection for up to 150,000 miles or 5 years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option that greatly surpasses corrosion standards. It provides protection for up to 150,000 miles in passenger cars and light trucks or up to 1,000,000 miles in heavy-duty applications.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands the rigors of heavy towing and elevated temperatures while remaining fluid in sub-zero conditions. It provides reserve protection during heavy use and is excellent for the automatic transmission in this vehicle.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Protects against wear and offers OE performance in a synthetic formulation, ensuring reliable shifting and transmission longevity.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers excellent ABS and traction-control responsiveness with a stable viscosity over a wide temperature range, ensuring safe stopping power.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Reduces friction and helps seals remain soft to prevent leaks. It resists heat for long fluid life and provides excellent high-temperature protection.
The 2021 Ram Promaster City is equipped with a 2.4-liter four-cylinder engine that requires 5.5 quarts of oil when performing a filter change. Regular maintenance is critical for this engine code, as synthetic oils maintain their viscosity better than conventional alternatives, especially during the hot summer months or cold winter mornings common in many regions. The AMSOIL Signature Series and Extended-Life options provide the most robust defense, allowing you to extend your service intervals significantly while keeping the engine cleaner and running cooler.
Protecting the Transmission and Cooling System
Automatic transmission fluid is another critical fluid that often gets overlooked until problems arise. For the Ram Promaster City, which utilizes an automatic transmission, using a high-quality synthetic fluid like the AMSOIL Signature Series or OE Fuel-Efficient types can make a substantial difference. These fluids are engineered to withstand the specific demands of your transmission, protecting it from wear, sludge, and the damaging effects of high temperatures. The capacity for the automatic transmission is approximately 6.3 quarts for an initial fill, ensuring there is ample fluid to circulate and lubricate all moving parts effectively.
Equally important is the cooling system. The vehicle requires 7.2 quarts of coolant, a volume that needs to be compatible with the metals and seals found in the radiator and engine block. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is an excellent choice as it is phosphate and silicate-free, preventing deposits that can clog narrow coolant passages. For those who prefer a concentrated solution that can be mixed to specific ratios for maximum efficiency, the Propylene Glycol Antifreeze and Engine Coolant offers extended protection against corrosion and erosion, safeguarding the engine from overheating.
Essential Fluids for Safety and Performance
Safety-critical systems like brakes and power steering also benefit from synthetic upgrades. The DOT 3 and DOT 4 Synthetic Brake Fluid offers superior resistance to moisture absorption and provides a consistent brake pedal feel, even under heavy braking conditions. Similarly, the 100% Synthetic Multi-Vehicle Power Steering Fluid helps keep the steering system responsive and quiet, reducing friction and preventing leaks that can lead to expensive repairs. These fluids, along with the optional P.i.® Performance Improver gasoline additive, work together to keep the entire vehicle operating at peak efficiency.
About the 2021 Ram Promaster City
The 2021 Ram Promaster City stands out as a versatile small van designed for both urban delivery and personal utility. Born from a partnership between Fiat Chrysler Automobiles and Ram, this vehicle represents a compact solution in the commercial van segment. It is built on a platform that prioritizes maneuverability and fuel efficiency, making it an ideal choice for drivers who need cargo space without the bulk of a full-size van. The 2.4-liter four-cylinder engine, known for its balance of power and economy, is a staple in many Fiat and Ram models of this era, offering a torque-heavy driving character that helps with loading and towing tasks typical of city environments.
Owners often favor this vehicle for its practicality and cost of ownership. Its compact dimensions allow it to navigate tight city streets and fit into smaller parking spaces, a significant advantage over larger rivals. The interior is designed to maximize cargo capacity, often featuring a low load floor and a rear liftgate that facilitates easy loading of boxes, tools, or personal gear. While it may not have the raw power of a larger truck, its reliability and efficiency make it a trusted workhorse for small business owners and families alike.
Despite its robust design, the 2021 Promaster City, like many modern vehicles, can face specific challenges that proper lubrication can help mitigate. One common issue reported by owners is engine roughness or stalling at low speeds, often caused by carbon buildup on intake valves, a problem common in direct injection engines. Using a fuel additive like the P.i. Performance Improver can help restore injector flow and reduce this buildup, smoothing out idle quality. Another frequent concern involves the cooling system, where older models may experience coolant leaks or overheating due to degraded hoses or failing seals. Upgrading to a high-quality antifreeze like AMSOIL can provide better thermal stability and seal conditioning, preventing leaks and maintaining optimal operating temperatures.
Transmission shifting issues can also occur, particularly after high mileage, where fluid breakdown leads to harsh shifts or hesitation. Switching to a synthetic transmission fluid can restore the fluid’s viscosity and frictional properties, leading to smoother gear changes and reduced wear on the clutch packs. Finally, owners often notice that the power steering can become noisy or stiff as the fluid degrades over time. A synthetic power steering fluid can reduce friction and protect the pump and seals, ensuring quiet and precise steering control throughout the life of the vehicle. By addressing these potential issues with the right synthetic lubricants, owners can significantly extend the service life and reliability of their Promaster City.