Maintaining your 1987 Chevrolet S10 Pickup with the 2.8L inline-six engine requires attention to the specific lubrication needs of its powertrain. This classic truck has been a staple of American roadways for decades, known for its durability and utility. However, as a vehicle ages, the tolerances within the engine and transmission may shift, and the fluids it was originally filled with often degrade over time. Proper lubrication is the difference between a truck that continues to run smoothly for years and one that suffers from premature wear, overheating, or costly mechanical failures.
Recommended AMSOIL Products
- AMSOIL Signature Series 10W-30 100% Synthetic Motor Oil – The top-tier choice for maximum engine protection, offering up to 25,000 miles of performance and superior resistance to horsepower loss and wear.
- AMSOIL Extended-Life 10W-30 100% Synthetic Motor Oil – An excellent balance of protection and value, delivering 20,000 miles of guaranteed service with enhanced cleaning power.
- AMSOIL OE 10W-30 100% Synthetic Motor Oil – Formulated to meet standard maintenance intervals with a focus on fighting sludge and deposits, ideal for vehicles that require OEM-level protection.
- AMSOIL 10W-30 100% Synthetic High-Mileage Motor Oil – Specifically designed for engines over 75,000 miles, featuring a unique chemistry to reduce sludge and boost detergent activity for better performance.
- AMSOIL Oil Filter – Provides 99% filtering efficiency at 20 microns, allowing for lower restriction to keep engine parts properly lubricated while capturing wear-causing contaminants.
- WIX Oil Filter – A premium alternative with media that offers improvements over original equipment manufacturer-branded filters, matching the OE recommended intervals.
The SAE 10W-30 viscosity grade is preferred for this engine when operating in temperatures above -18°C. The system holds 4.5 quarts of fluid when the filter is changed, and the drain plug should be torqued between 15 and 20 ft/lbs. For older vehicles, the AMSOIL High-Mileage 10W-30 can help revitalize seals and reduce oil consumption. Whether you are driving under severe conditions or extending your service intervals, choosing the right oil base ensures your S10 remains reliable.
Complete Fluid Protection Guide
Beyond the engine, the transmission, cooling, and drivetrain systems of your 1987 S10 require specific formulations to prevent wear and maintain efficiency. The cooling system, for instance, holds 11.1 quarts and relies on a stable antifreeze mix to prevent freezing and overheating. Using a high-quality antifreeze like AMSOIL Passenger Car & Light Truck Antifreeze & Coolant ensures protection for up to 150,000 miles or five years, safeguarding metals, gaskets, and hoses against corrosion. If you prefer a concentrated solution, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers extended life with superior thermal management.
Transmission health is equally critical. The 4-speed THM700-R4 automatic transmission requires a total fill of 11.2 quarts, while the 3-speed THM180C holds 5.2 quarts. Both specifications have been updated to meet Dexron VI requirements. AMSOIL Signature Series Fuel-Efficient Automatic Transmission Fluid withstands the rigors of towing and high temperatures while remaining fluid in sub-zero conditions. Alternatively, the AMSOIL OE Fuel-Efficient ATF provides robust protection against wear for standard service intervals.
Manual transmissions, such as the CH465/MC9 or T5/ML2, require a GL-5 rated lubricant. The capacities vary by model, generally ranging from 4.2 to 8 pints. For these units, AMSOIL SEVERE GEAR 80W-90 offers advanced wear protection and controls thermal runaway. The 75W-90 and 75W-110 variants provide similar extreme pressure protection with varying flow characteristics for different climates. For transfer cases and differentials, the same SEVERE GEAR series products are recommended to handle the high stress of four-wheel-drive operation and rear axle loads.
Maintenance of Brakes and Steering
Hydraulic brake systems in the 1987 S10 should be serviced with a fluid that offers high boiling points to prevent vapor lock under heavy braking. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid provides excellent responsiveness for ABS and traction control systems while maintaining a stable viscosity across a wide temperature range. Similarly, power steering systems benefit from AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid, which reduces friction, keeps seals soft to prevent leaks, and resists heat breakdown for long fluid life.
About the Vehicle: 1987 Chevrolet S10 Pickup
The 1987 Chevrolet S10 Pickup represents a pivotal era in the history of compact trucks. Introduced in 1982 as part of Chevrolet’s “Square Body” lineage, the S10 quickly gained a reputation for combining rugged utility with car-like handling. By 1987, the model had been refined and was offered with several engine options, but the 2.8L V6 (Engine Code R) was a popular choice for those seeking a balance between fuel economy and adequate power for hauling light loads or towing small trailers. This inline-six engine is known for its reliability and smooth power delivery, making it a favorite among owners who prioritize longevity.
Owners of this vehicle often appreciate the S10’s versatility. The compact dimensions allowed it to navigate tighter spaces than full-size trucks while offering a bed configuration suitable for various DIY projects, weekend camping trips, or light construction work. The 1987 model year falls within the second generation of the S10 platform, which saw improvements in safety features and interior ergonomics compared to its predecessor. The suspension setup provided a comfortable ride for daily commutes, yet the frame retained the strength necessary for off-road adventures or hauling cargo.
Despite its robust build, owners of the 1987 S10 2.8L should be aware of a few common issues that can arise as the vehicle ages. One frequent concern is oil consumption or leaks, which can occur due to the hardening of valve stem seals and gaskets over time. Using a high-mileage synthetic motor oil can help mitigate this by swelling the seals and maintaining a protective film even as the engine clocks higher miles. Another potential problem is transmission shifting issues or fluid degradation, particularly in automatic transmissions that see heavy stop-and-go traffic or towing. Regular fluid changes with a high-quality synthetic ATF can restore smooth shifting and protect the valve body from wear.
Corrosion is also a factor for any vehicle from the 1980s, especially in regions where road salt is used during winter months. The 2.8L engine and its associated components can suffer from rust, which may lead to overheating if the cooling system is compromised. Flushing the system and filling it with a phosphate-free, silicate-free antifreeze like AMSOIL Propylene Glycol can provide extended corrosion protection without damaging aluminum components. Additionally, fuel system deposits can build up over decades of storage or use with ethanol-blended fuels. Incorporating a fuel system cleaner such as AMSOIL P.i. Performance Improver can help restore injector flow and improve combustion efficiency, ensuring the engine runs as smoothly as it did when it left the factory.
Ultimately, keeping a 1987 Chevrolet S10 Pickup running well is about proactive maintenance. By selecting the right lubricants for each component—from the engine and transmission to the brakes and cooling system—you can extend the life of this classic truck and enjoy the driving experience it was designed to provide. The combination of AMSOIL synthetic products and regular service intervals ensures that your S10 remains a reliable companion on the road for years to come.