Keeping a 1987 Ford Ranger with the 2.0L 4-cylinder engine (Code C) running smoothly requires more than just basic maintenance; it demands precise fluid selection that can withstand the demands of a vehicle that has seen decades of service. Whether you are driving this classic truck through winter’s freeze or navigating rugged terrain during summer, the correct lubricants ensure that every moving part remains protected against wear, heat, and oxidation. Using the right fluids is the difference between a vehicle that runs well and one that is constantly fighting to stay on the road. Below, we detail the exact AMSOIL products and capacities recommended for your specific engine and transmission setup.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil – Provides unsurpassed engine protection with up to 25,000 miles of coverage, offering 75% more protection against horsepower loss and wear compared to conventional oils. Ideal for severe service conditions.
- AMSOIL Extended-Life 5W-30 100% Synthetic Motor Oil – Features 37% more cleaning power to keep the engine running smoother and includes protection against Low-Speed Pre-Ignition (LSPI) for up to 20,000 miles.
- AMSOIL Oil Filter – Delivers 99% filtering efficiency at 20 microns, allowing for lower restriction to keep engine parts lubricated while providing greater capacity for small, wear-causing contaminants than competing filters.
- AMSOIL OE 5W-30 100% Synthetic Motor Oil – A trusted option that fights sludge and deposits with a 100% synthetic formulation, outperforming conventional oils and meeting OEM mileage standards.
- AMSOIL 5W-30 100% Synthetic High-Mileage Motor Oil – Specially formulated for vehicles with over 75,000 miles, featuring a boosted detergent package to reduce sludge by 67% and enhanced anti-wear additives.
- WIX Oil Filter – Offers premium media with improvements over original equipment manufacturer-branded filters, ensuring reliable filtration for those preferring a WIX brand.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – An ethylene glycol 50/50 pre-mix formulation that protects all cooling system metals, gaskets, and hoses for up to 150,000 miles or 5 years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option that greatly surpasses standards for metallic corrosion and erosion, offering protection up to 150,000 miles.
- AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Withstands the rigors of heavy towing and elevated temperatures, providing reserve protection during heavy use and staying fluid in sub-zero conditions.
- AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Guards against leaks and promotes smooth, shudder-free shifts while protecting against wear and harmful sludge.
- AMSOIL Torque-Drive® 100% Synthetic Automatic Transmission Fluid – Fights thermal and oxidative degradation to provide long oil life for automatic transmissions.
- 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.
- AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube – Advanced protection against wear with friction modifiers for limited-slip applications, helping reduce operating temperatures.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – Controls thermal runaway and protects against rust and corrosion in manual and automatic transfer cases and differentials.
- AMSOIL SEVERE GEAR® 75W-110 100% Synthetic Gear Lube – Ideal for limited-slip differentials requiring a heavier viscosity, offering long oil and seal life.
- AMSOIL Super Shift® Racing Transmission Fluid – Recommended for power steering applications, resisting extreme heat to eliminate slippage and improve performance.
- AMSOIL Signature Series P.i.® Performance Improver Gasoline Additive – Restores up to 14% horsepower and GDI fuel injectors, improving fuel economy and reducing the need for higher-octane fuel.
The heart of this truck is the 2.0L 4-cylinder engine, identified by the specific Code C. This engine has a capacity of 5.0 quarts when the oil filter is replaced. It is crucial to remove the dipstick during the refill process to ensure adequate venting, allowing the oil to flow freely into the crankcase before checking the level. The drain plug should be torqued to a specification between 15 and 25 ft/lbs to ensure a proper seal without risking damage to the pan. For cooling, the system requires a capacity of 6.3 quarts. AMSOIL offers both Passenger Car & Light Truck Antifreeze pre-mixes and concentrated Propylene Glycol Antifreeze, both formulated to protect the metal and rubber components of this aging cooling system from corrosion and erosion.
The automatic transmission, specifically the A4LD 4-speed model, has different fill capacities depending on the drivetrain configuration. For the RWD model, the total fill is 9 quarts, while the 4WD version requires 10 quarts for a complete flush. The transfer case, where applicable, requires 3 pints. Differential capacities vary by the specific axle type: the Dana 28 front differential holds 1.1 pints, the Dana 35 front holds 3.6 pints, and the rear standard or limited-slip differentials hold 5.1 pints. For all differential and transfer case lubrication, AMSOIL SEVERE GEAR® 80W-90 synthetic gear lubes are the recommended standard. These fluids contain friction modifiers essential for limited-slip differentials and offer superior thermal stability compared to conventional gear oils, which is critical for a truck that may be used for towing or hauling loads.
Brake fluid maintenance is equally important for safety. The 1987 Ranger typically utilizes a hydraulic brake fluid meeting Ford specification WSS-M6C92-A1 (Motorcraft PM-1). AMSOIL’s 100% Synthetic Brake Fluid, compatible with DOT 3 and DOT 4 standards, ensures stable viscosity across a wide temperature range, improving responsiveness for both ABS and traction control systems. For power steering, which often relies on ATF Type-F, the AMSOIL Super Shift® Racing Transmission Fluid is the superior choice for resisting heat and preventing slippage.
About the 1987 Ford Ranger
The 1987 Ford Ranger stands as a significant entry in the annals of American automotive history, marking the vehicle’s evolution into a more refined and capable light truck. Launched to compete directly with the Japanese imports that had begun to dominate the compact truck market, the Ranger brought a blend of durability and everyday usability that made it a favorite among workers and families alike. The 2.0L inline-four engine in this model, often designated by the engine code C, was designed to offer fuel efficiency without sacrificing the pulling power needed for a work vehicle. It sits within the first generation of Rangers, a platform that defined the segment for over a decade.
Owners of this specific model often appreciate its rugged simplicity. The Ranger was known for its solid chassis and straightforward mechanical layout, which made it easier to service and repair compared to more complex contemporaries. The 4-cylinder engine provided a reliable, economical baseline for daily driving, while larger engine options like the 2.9L V6 (available in later years or other trims) offered more torque for those tackling heavier loads. The driving character of the 1987 Ranger is distinctly utilitarian; it is not built for high-speed highway cruising but excels in low-speed torque and maneuverability in tight spaces. Its compact size allows it to handle off-road trails and narrow suburban streets with equal grace.
However, as with any vehicle from the late 1980s, certain maintenance challenges are common as the mileage accumulates. One frequent issue involves oil consumption and engine sludge buildup, particularly in engines that have not been subjected to regular synthetic oil changes. Older seals and gaskets can harden, leading to minor leaks, which synthetic formulations like AMSOIL 5W-30 High-Mileage Motor Oil are specifically designed to condition and protect against. Another common problem is transmission slippage and shudder, a result of the fluid degrading over time and losing its ability to transmit hydraulic pressure effectively. Switching to a high-quality synthetic transmission fluid, such as the AMSOIL OE Multi-Vehicle Automatic Transmission Fluid, can restore smooth shifting and protect the A4LD transmission from premature wear. Additionally, these older trucks are susceptible to differential and transfer case noise, especially if limited-slip clutches are worn or the gear oil has turned sludgy. SEVERE GEAR® 75W-90 synthetic gear lubricants provide the necessary friction modifiers and thermal stability to quiet these components and extend their life. Finally, corrosion in the cooling system can be a persistent issue in vehicles that are now over three decades old, often caused by traditional coolants losing their additive packages. A dedicated antifreeze like AMSOIL Passenger Car & Light Truck Antifreeze can seal microscopic leaks and protect the radiator and heater core from rust and scale buildup.
Maintaining this classic Ranger with high-performance synthetic lubricants not only addresses these specific weaknesses but also future-proofs the vehicle for the years to come. By choosing the right fluids, owners ensure that their 1987 Ranger continues to perform reliably, whether it is hauling tools to a job site or cruising through scenic backroads.