The 2012 Ram 1500 Pickup equipped with the 5.7L HEMI V8 engine is a robust truck known for its power and towing capability, but keeping this high-performance engine running smoothly requires the use of premium synthetic lubricants. Proper fluid maintenance is not just about preventing immediate wear; it is a long-term investment that ensures fuel efficiency, extends component life, and maintains peak performance under heavy loads or extreme weather conditions. Using the correct viscosities and fluid specifications allows the engine to start quickly in cold weather while protecting internal components from heat and friction during high-stress operation like towing or hauling.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil – Offers the highest level of protection against horsepower loss and wear, designed for extended drain intervals up to 25,000 miles.
- AMSOIL Extended-Life 5W-20 100% Synthetic Motor Oil – Provides superior cleaning power to keep the engine running smoothly for up to 20,000 miles between changes.
- AMSOIL OE 5W-20 100% Synthetic Motor Oil – A cost-effective synthetic option that fights sludge and deposits effectively for OEM-level protection.
- AMSOIL 5W-20 100% Synthetic High-Mileage Motor Oil – Formulated specifically for engines with over 75,000 miles, featuring boosted detergents to reduce sludge and worn seals.
- AMSOIL Oil Filter – Delivers 99 percent filtering efficiency at 20 microns to remove harmful contaminants and protect engine longevity.
- WIX Oil Filter – A premium alternative that offers superior media compared to standard OEM-branded filters for reliable engine protection.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A durable 50/50 pre-mix formulation that protects cooling system metals, gaskets, and hoses for up to 150,000 miles.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated synthetic coolant that allows for mixing with water and offers exceptional corrosion protection in extreme temperatures.
- AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Withstands the rigors of heavy towing and elevated temperatures while remaining fluid in sub-zero conditions.
- AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Promotes smooth, shudder-free shifts and resists harmful sludge buildup for extended service intervals.
- WIX Transmission Filter – A deep pan filter designed to improve upon original equipment manufacturer standards for better fluid flow and contaminant capture.
- AMSOIL SEVERE GEAR 75W-90 100% Synthetic Gear Lube – Ideal for limited-slip differentials, offering advanced wear protection and control over thermal runaway.
- AMSOIL SEVERE GEAR 75W-110 100% Synthetic Gear Lube – Provides heavy-duty protection against wear and rust for demanding off-road and towing applications.
- AMSOIL SEVERE GEAR 75W-140 100% Synthetic Gear Lube – Specifically recommended for rear limited-slip differentials, ensuring smooth operation and long equipment life.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers excellent ABS responsiveness and a stable viscosity across a wide temperature range for superior stopping power.
- AMSOIL P.i. Performance Improver Gasoline Additive – Restores up to 14% horsepower and cleans fuel injectors to improve fuel economy and reduce pre-ignition knock.
Maintaining Your Engine Health
The 2012 Ram 1500 with the 5.7L HEMI V8 engine relies heavily on high-quality lubricants to manage the thermal and mechanical stresses inherent in this powerful powertrain. This engine demands a 5W-20 viscosity oil to ensure proper flow during cold starts while maintaining sufficient film strength at operating temperature. The engine oil capacity for this vehicle is 7.0 quarts when including a filter change. It is critical to check the oil level immediately after refilling to ensure the correct quantity is used, as overfilling or underfilling can impact engine performance and longevity.
AMSOIL Signature Series 5W-20 is engineered to provide up to 75% more engine protection against horsepower loss and wear compared to conventional oils. It is the preferred choice for drivers who want to maximize the service life of their engine and extend drain intervals up to 25,000 miles or one year. For owners looking for a balance between performance and value, the Extended-Life 5W-20 offers 37% more cleaning power to keep the engine running smoother for up to 20,000 miles. Those with vehicles that have exceeded 75,000 miles will benefit significantly from the High-Mileage formula, which features enhanced detergents and seal conditioners to reduce sludge and oil consumption.
Filtering efficiency is equally vital. The AMSOIL Oil Filter is designed with synthetic media that provides 99 percent filtration efficiency at 20 microns, which is smaller than the particles that cause the majority of engine wear. This filter also allows for lower restriction compared to many competitors, ensuring that oil flows freely to lubricate critical components. If you prefer a premium aftermarket filter, the WIX Oil Filter is an excellent alternative that offers improvements over original equipment manufacturer filters, ensuring reliable protection for your HEMI engine.
Transmission and Drivetrain Care
The automatic transmission in the 2012 Ram 1500, particularly the 6-speed 65RFE found in 4WD models, operates under significant stress, especially when towing or hauling heavy loads. The fluid capacity for a total fill of this transmission is approximately 16.9 quarts, though initial fill volumes are lower. Maintaining the health of this transmission requires a fluid that can withstand elevated temperatures and heavy torque loads without breaking down.
AMSOIL Signature Series Multi-Vehicle Automatic Transmission Fluid is specifically formulated to handle the rigors of heavy towing and extreme terrain. It remains fluid in sub-zero temperatures and provides reserve protection during heavy use, making it ideal for the Ram’s transmission. For owners who prioritize a balance of protection and cost, the OE Multi-Vehicle Automatic Transmission Fluid offers excellent cold-weather performance and helps prevent leaks while promoting smooth, shudder-free shifts.
When performing a transmission service, the WIX Transmission Filter is a key component. Designed as a deep pan filter for the 545RFE transmission, it offers improved media that captures contaminants more effectively than standard filters. Ensuring the transmission fluid and filter are changed at recommended intervals protects the torque converter, valve body, and internal gears from premature wear.
Differential and Transfer Case Lubrication
For the drivetrain components, the Ram 1500 utilizes several differentials and a transfer case that require specific lubricants to operate smoothly. The front differential (215FD) requires 75W-90 gear lube with a capacity of 2.3 pints. The rear differential varies based on the configuration; standard rear differentials (C235 without Limited Slip) require 75W-140 gear lube with a capacity of 4.6 pints, while rear differentials equipped with a Limited Slip Differential also require 75W-140 but necessitate the addition of a Mopar limited-slip additive (MS-10111) for proper friction modifier levels.
AMSOIL SEVERE GEAR 75W-90 is a top choice for front differentials, providing advanced protection against wear and thermal runaway while containing friction modifiers suitable for limited-slip applications. For the rear differential, the 75W-140 variant is the correct specification, offering long oil and seal life. If your vehicle is equipped with a heavy-duty application or requires higher viscosity for extreme conditions, the 75W-110 and 80W-90 variants are available as alternatives.
Transfer case lubrication is also critical for 4WD models. Depending on the specific unit, such as the NV243 or the BW 44-44/44-45, the capacity ranges from 3.0 to 3.4 pints. AMSOIL OE Multi-Vehicle Automatic Transmission Fluid or Signature Series ATF can be used for certain transfer cases, ensuring smooth engagement and protection against wear. Proper lubrication of these components ensures that power is delivered efficiently to the wheels, regardless of the terrain.
Cooling and Brake System Fluids
The cooling system in the 2012 Ram 1500 holds a significant volume of fluid, with a capacity of 15.9 quarts. Keeping this system full of the correct coolant is essential to prevent overheating, which can lead to catastrophic engine damage. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a unique poly-organic acid (OAT) formulation that is compatible with a wide variety of vehicles and exceeds original equipment manufacturer requirements. It offers protection for up to 150,000 miles or five years and is phosphate-, nitrate-, and silicate-free, making it safe for all cooling system metals and components.
For those who prefer a concentrated solution that can be mixed with distilled water to meet specific freezing point requirements, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant is an excellent choice. This high-performance coolant protects against corrosion and erosion, greatly surpassing industry standards for metallic durability.
The brake system relies on high-quality hydraulic fluid to ensure responsive pedal feel and safe stopping power. The Ram 1500 utilizes DOT 3 and DOT 4 hydraulic brake fluids. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid provides excellent ABS and traction-control responsiveness due to its stable viscosity over a wide temperature range. This ensures that the braking system performs reliably in both freezing winter conditions and hot summer roadways, reducing the risk of brake fade.
Performance Additives and Storage
To maximize the fuel economy and power output of the 5.7L HEMI, AMSOIL P.i. Performance Improver is a highly effective gasoline additive. It restores fuel injectors to 100% flow rate after just one tank of fuel, which can result in up to a 14% restoration of horsepower. This additive also helps prevent carbon buildup and controls pre-ignition knock, allowing the engine to run on lower-octane fuel if necessary while maintaining peak efficiency.
For seasonal storage, where the truck may sit for extended periods, preventing fuel degradation and engine corrosion is paramount. AMSOIL Gasoline Stabilizer keeps fuel fresh for up to 12 months, protecting against varnish, gum buildup, and ethanol corrosion. To further protect the engine during storage, AMSOIL Engine Fogging Oil can be used to coat internal components, preventing rust and corrosion during long periods of inactivity. These products ensure that when you return to driving, your Ram 1500 is ready to perform at its best.
Vehicle Background
The 2012 Ram 1500 Pickup is a significant model in the history of American trucks, representing the first full redesign of the Ram 1500 platform since the introduction of the fifth generation. This generation was a pivotal shift for the brand, focusing heavily on improving ride quality, fuel efficiency, and interior comfort without sacrificing the traditional capabilities that truck owners expect. The 2012 model year, in particular, was the debut year for this new platform, bringing a host of technological and engineering improvements to the table.
Under the hood, the 5.7L HEMI V8 engine code EZH stands out as the workhorse of this lineup. This engine delivers robust power and torque, making the Ram 1500 a formidable competitor in the full-size pickup segment. The 5.7L HEMI is renowned for its versatility, handling everything from daily commuting to heavy-duty towing and hauling with ease. The engine’s design allows for variable valve timing (MDS), which deactivates half of the cylinders under light load conditions to improve fuel economy, a technology that was becoming more prevalent in the industry during this era.
Externally, the 2012 Ram 1500 featured a bold, assertive design with a large crosshair grille and a more squared-off profile compared to its predecessors. The interior saw a major upgrade as well, with high-quality materials, better sound insulation, and an improved dashboard layout that rivaled many European luxury vehicles. The vehicle was built with a focus on driver engagement and comfort, offering a smoother ride quality that was previously uncommon in the truck segment.
The 2012 model year also introduced a wider range of engine options, including the 3.7L V6, the 4.7L V8, and the 5.7L HEMI, giving buyers flexibility based on their specific needs. The availability of four-wheel drive and various suspension options allowed owners to tailor the truck to their lifestyle, whether for off-road adventures or on-road hauling. The platform’s architecture was designed for durability, with a frame and body structure that provided the necessary strength for commercial and recreational use. This combination of power, comfort, and capability solidified the 2012 Ram 1500’s reputation as a versatile and reliable truck, beloved by both work and leisure drivers.
Whether you are using your 2012 Ram 1500 to haul construction materials, tow a boat, or simply drive to work, using the correct AMSOIL lubricants ensures that every component of your truck is protected. From the engine’s pistons to the differential’s gears, the right fluids make a tangible difference in performance and longevity. By choosing premium synthetic lubricants, you are investing in the continued reliability and performance of your vehicle for years to come.