Maintaining a 1987 Dodge Ramcharger equipped with the 5.2L 8-cylinder engine requires more than just following a standard maintenance schedule; it demands selecting the correct lubricants that can withstand the rigors of a vehicle designed for decades of service. Proper fluid selection is critical for preserving the engine’s mechanical integrity, ensuring smooth transmission shifts, and protecting the drivetrain components from the wear and tear associated with heavy loads and varying climate conditions.
Recommended AMSOIL Products
- AMSOIL Signature Series 10W-30 100% Synthetic Motor Oil – Provides unsurpassed engine protection and can extend change intervals up to 25,000 miles for drivers seeking maximum performance.
- AMSOIL Extended-Life 10W-30 100% Synthetic Motor Oil – Offers extended protection for up to 20,000 miles, featuring enhanced cleaning power to keep the engine running smoothly.
- AMSOIL OE 10W-30 100% Synthetic Motor Oil – A cost-effective synthetic option that fights sludge and deposits, meeting original equipment specifications while delivering superior protection.
- AMSOIL 10W-30 100% Synthetic High-Mileage Motor Oil – Specifically formulated for engines over 75,000 miles with boosted detergents and seal conditioners to reduce sludge and leaks.
- AMSOIL Oil Filter – Delivers 99 percent filtering efficiency at 20 microns and offers greater capacity for small contaminants to reduce engine wear during extended service intervals.
- WIX Oil Filter – A premium media filter that offers improvements over standard OEM-branded filters, providing reliable protection for conventional oil change schedules.
- AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Designed to withstand heavy towing, elevated temperatures, and challenging terrain 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 optimal transmission performance.
- AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube – Ideal for manual transmissions and differentials, providing advanced protection against wear and controlling thermal runaway.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – Offers long oil and seal life with friction modifiers suitable for limited-slip applications in the rear differential.
- AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube – The preferred choice for front Spicer 44 and 60F differentials, delivering extreme pressure protection in all temperature ranges.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – An ethylene glycol 50/50 pre-mix formulation that protects cooling system metals and hoses for up to 150,000 miles or 5 years.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Ensures excellent ABS and traction-control responsiveness with a stable viscosity across a wide temperature range.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Reduces friction and helps seals remain soft to prevent leaks while providing strong anti-wear protection.
When performing a complete fluid service on your 1987 Ramcharger, the engine oil capacity is 5.9 quarts when including the filter replacement. It is vital to adhere to this specification and check the oil level after refilling to ensure the engine is properly lubricated. The drain plug torque should be set to 20 ft/lbs to prevent leaks or stripped threads.
For the cooling system, the fluid requirements vary slightly depending on whether your vehicle is equipped with air conditioning. Models without AC require 15.9 quarts, while those with AC need 16.9 quarts of AMSOIL Passenger Car & Light Truck Antifreeze & Coolant. Using a high-quality antifreeze is essential to prevent corrosion and maintain the integrity of the radiator, hoses, and gaskets. AMSOIL’s Propylene Glycol Antifreeze and Engine Coolant offers a unique poly-organic acid formulation that exceeds OEM requirements and provides protection against rust and corrosion for extended periods.
Transmission maintenance is equally critical for this vintage vehicle. The 3-speed automatic transmissions, including the A999 and A727 models, require a total fill of 8.6 quarts and 6.6 quarts respectively, with initial fills starting at 4 quarts. For manual transmissions like the A435, 7 pints of fluid are required. Synthetic transmission fluids are superior in these applications because they resist oxidation and shear-down, ensuring smooth gear engagement and extending the life of the transmission components.
Differential and transfer case lubrication is often overlooked but is essential for off-road enthusiasts and drivers who tow. The transfer case (NP208) holds 5.9 pints, while front differentials such as the Spicer 44 and 60F require 5.7 pints and 6.6 pints respectively. Rear differentials vary, with the Spicer 60 and Spicer 70 holding 5.9 and 7 pints, and the 8.25 RG holding 4.4 pints. For limited-slip differentials, AMSOIL recommends using their SEVERE GEAR® 80W-90 100% Synthetic Gear Lube or the SEVERE GEAR® 75W-90 100% Synthetic Gear Lube, which contain friction modifiers necessary for proper operation. If your vehicle requires a limited-slip additive like Mopar Trac-loc, the synthetic base fluid provides an excellent foundation for such treatments.
Vehicle Background
The 1987 Dodge Ramcharger represents a unique chapter in American automotive history, sitting comfortably at the intersection of utility and off-road capability. Based on the full-size Dodge D-series pickup truck chassis, the Ramcharger was a two-door SUV that shared its mechanical underpinnings with the Dodge Ram Van and the W-Series trucks. This platforming strategy meant that the 1987 Ramcharger inherited the rugged durability and high-load capacity of Dodge’s heavy-duty work trucks, making it a preferred choice for those who needed a vehicle that could handle both daily commuting and serious recreational use.
Powered by the robust 5.2L V8 engine (engine code T) in the configuration detailed for this guide, the Ramcharger delivered substantial torque, which is crucial for moving its heavy frame, especially when towing or driving off-road. The vehicle was designed with a high center of gravity relative to the era’s cars, but its solid axles and 4-wheel drive system provided exceptional traction in challenging conditions. Owners of the 1987 Ramcharger often appreciate its simple, mechanical nature. Unlike modern SUVs that rely on complex electronic sensors, the Ramcharger relies on proven engineering, making it easier for DIY enthusiasts to maintain and repair without the need for expensive diagnostic equipment.
However, the age of this vehicle means that certain components are prone to specific wear issues that can be mitigated with high-performance lubricants. One common problem with this generation of Dodge SUVs is oil consumption and sludge buildup in the crankcase, particularly if the vehicle has seen many miles or has been subjected to severe driving conditions like frequent towing. Using a high-mileage synthetic motor oil like the AMSOIL 10W-30 100% Synthetic High-Mileage Motor Oil can help mitigate these issues by providing better detergent action and reducing the formation of sludge deposits that can clog oil galleries. Another prevalent issue involves the cooling system; as the vehicle ages, rubber hoses and metal gaskets can become brittle, leading to coolant leaks. AMSOIL’s antifreeze formulations include corrosion inhibitors that protect the cooling system metals and help maintain the flexibility of hoses and gaskets, reducing the risk of costly overheating failures.
Transmission issues can also arise in older automatic transmissions, where seals dry out and sludge causes shuddering during gear shifts. A synthetic transmission fluid like AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid can recondition seals and keep the fluid flowing smoothly, preventing the harsh shifts that often signal impending transmission failure. Additionally, the differentials and transfer cases in the Ramcharger are subjected to significant stress when used for off-roading or towing. Without proper lubrication, the gears and bearings can suffer from wear and thermal breakdown. Applying a synthetic SEVERE GEAR® 80W-90 100% Synthetic Gear Lube or the SEVERE GEAR® 75W-90 100% Synthetic Gear Lube helps control operating temperatures and prevents wear, ensuring that the drivetrain remains reliable even under extreme loads. By addressing these specific vulnerabilities with the right fluids, owners can extend the life of their 1987 Dodge Ramcharger and keep it performing like new.