The 2007 Ford Explorer equipped with the 4.6L V8 engine is a capable SUV known for its robust powertrain, but like any vehicle with higher mileage, it requires dedicated care to maintain peak performance. Proper lubrication is the lifeblood of this machine, ensuring that the internal components of the engine, transmission, and drivetrain operate with minimal friction and maximum protection. Choosing the correct viscosity and formulation can mean the difference between a smooth, responsive drive and premature wear, especially when the vehicle is subjected to towing, heavy hauling, or extreme weather conditions.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil – Provides up to 25,000 miles of protection and 75% more engine defense against horsepower loss compared to industry standards.
- AMSOIL Extended-Life 5W-20 100% Synthetic Motor Oil – Offers 20,000 miles of protection with enhanced cleaning power to keep the engine running smoother for longer intervals.
- AMSOIL OE 5W-20 100% Synthetic Motor Oil – Delivers reliable protection with a formulation designed to fight sludge and deposits while meeting original equipment specifications.
- AMSOIL 5W-20 100% Synthetic High-Mileage Motor Oil – Specifically formulated for vehicles with over 75,000 miles, featuring reduced sludge and enhanced anti-wear additives.
- AMSOIL Oil Filter – Delivers 99% filtration efficiency at 20 microns with increased capacity to trap contaminants that cause wear.
- WIX XP Oil Filter – Features premium media that outperforms original equipment manufacturer filters in protection and flow.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – An OAT formulation providing protection for up to 150,000 miles or five years.
- AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Withstands heavy towing and elevated temperatures while remaining fluid in sub-zero conditions.
- AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube – Provides advanced wear protection and controls thermal runaway in front differentials.
- AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube – The preferred choice for rear differentials, especially for limited-slip applications requiring GL-5 rating.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers excellent ABS responsiveness and stable viscosity across a wide temperature range.
Understanding the specific fluid requirements for the 4.6L V8 engine is crucial for maintaining the longevity of this powerplant. The engine calls for a 5W-20 viscosity, with a total capacity of 6.3 quarts when the filter is replaced. During the oil refill process, it is important to remove the dipstick to ensure proper venting, allowing the oil to flow freely into the crankcase. Once refilled, the oil level must be checked to confirm the correct quantity. The oil drain plug should be torqued to 19 ft/lbs to prevent leaks while avoiding thread damage.
Engine Oil Selection and Benefits
Selecting the right motor oil is the most critical maintenance task for a 2007 Ford Explorer. The engine’s longevity depends on the oil’s ability to maintain viscosity at high temperatures and remain fluid during cold starts. AMSOIL Signature Series offers the highest level of protection, reducing horsepower loss and wear by 75% compared to standard testing benchmarks. This synthetic formulation ensures that turbochargers and other critical components receive immediate lubrication, even in freezing conditions.
For owners seeking a balance between cost and performance, the AMSOIL OE 5W-20 provides robust protection that meets or exceeds original equipment standards. It is formulated to fight sludge and deposits, keeping the engine internals clean. If the vehicle has accumulated significant mileage, the High-Mileage 5W-20 variant is the ideal choice. It contains a unique chemistry designed to condition seals, reduce oil consumption, and lower sludge by 67%. This helps older engines run smoother and extend their operational life.
Filtration Systems
Using a high-quality oil filter is just as important as the oil itself. The AMSOIL Oil Filter (EAO11) offers 99% filtration efficiency at 20 microns, trapping small, wear-causing contaminants more effectively than many competitors. Its design allows for lower restriction, ensuring that oil flows freely to all engine parts. For those who prefer the WIX brand, the XP Oil Filter (51372XP) features premium media that improves upon the filtration capabilities of standard OEM-branded filters, providing an excellent alternative for those seeking established aftermarket quality.
Automatic Transmission Fluid
The automatic transmission in the 2007 Explorer is a sensitive component that benefits greatly from synthetic fluid. For the 5R55S transmission, a total fill requires 12.4 quarts. The Signature Series Multi-Vehicle ATF is designed to withstand the rigors of heavy towing and elevated temperatures, ensuring the transmission shifts smoothly and resists shudder. It remains fluid in sub-zero temperatures, providing immediate protection upon startup. For a cost-effective solution, the OE Multi-Vehicle ATF offers excellent cold-weather performance and guards against leaks, promoting shudder-free shifts.
If the vehicle is equipped with the 6R60 transmission, the total fill capacity is 11.2 quarts, with an initial fill of 5 quarts. In this application, the Signature Series Fuel-Efficient ATF or the OE Fuel-Efficient ATF are recommended. These fluids are engineered to improve transmission efficiency while providing the durability required for severe service. They help reduce operating temperatures and extend the life of seals and internal components.
Cooling System Maintenance
Proper coolant is essential to prevent overheating and corrosion within the cooling system. The 2007 Explorer’s cooling system has a capacity of 13.9 quarts when equipped with an auxiliary heater and 15.7 quarts without. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a ready-to-use 50/50 ethylene glycol pre-mix that protects all cooling system metals, gaskets, and hoses. It is phosphate-, nitrate-, and silicate-free, making it compatible with a wide variety of engines and offering protection for up to 150,000 miles or five years.
For those who prefer a concentrated option, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant can be mixed with distilled water. This formulation greatly surpasses industry standards for metallic corrosion and erosion protection. It is safe for all cooling system components and offers a service life of up to 150,000 miles or five years in passenger cars and light trucks.
Differential and Transfer Case Lubrication
The front differential typically requires GL-5 rated oil, with a capacity of 2.7 pints. AMSOIL SEVERE GEAR® 80W-90 is an excellent choice, providing advanced protection against wear and controlling thermal runaway. It contains friction modifiers suitable for limited-slip applications. For the rear differential, particularly if equipped with a Traction-Lok or limited-slip unit, AMSOIL SEVERE GEAR® 75W-140 is required. It offers superior protection against rust and corrosion while helping reduce operating temperatures.
The transfer case, while capacity varies, also benefits from high-performance lubrication. The Signature Series Multi-Vehicle ATF can be used in the transfer case to ensure smooth operation and protection against wear. This fluid helps maintain proper viscosity and flow characteristics, ensuring that the transfer case engages and disengages smoothly during off-road driving.
Other Fluids and Additives
Brake fluid is often overlooked but is critical for safety. The AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid offers excellent responsiveness for ABS and traction control systems. It maintains a stable viscosity over a wide temperature range, ensuring consistent braking performance in all conditions. For power steering systems that originally specified Mercon fluids, the Signature Series Multi-Vehicle ATF or OE Multi-Vehicle ATF can be used to provide enhanced protection and smooth operation.
Seasonal and Storage Needs
When the vehicle is not in use for extended periods, proper storage fluids are necessary to prevent internal rust and corrosion. AMSOIL Gasoline Stabilizer helps keep fuel fresh for up to 12 months, protecting against varnish and gum buildup. For engine protection during storage, AMSOIL Engine Fogging Oil is highly effective, coating internal components to prevent rust. It is ideal for engines that will sit for long periods, such as in the winter months.
About the Vehicle
The 2007 Ford Explorer represents a significant chapter in the history of American SUVs, marking the transition to the unibody fourth generation platform. This model year is powered by the 4.6L V8 engine, a robust and proven powertrain that has been a staple in Ford vehicles for decades. Known for its smooth power delivery and reliability, this engine provides the necessary torque for a vehicle of its size, making it suitable for a variety of driving scenarios from daily commuting to light off-roading.
Owners of the 2007 Explorer often appreciate its blend of comfort and utility. The vehicle was designed to carry passengers and cargo with ease, offering a spacious interior and a versatile cargo area. The independent rear suspension introduced in this generation improved ride quality, making it a more car-like driving experience compared to its body-on-frame predecessors. This shift in platform design enhanced handling characteristics without sacrificing the rugged capability that Explorer buyers expect.
However, like any vehicle of this age, the Explorer can encounter specific issues that require proactive maintenance. One common area of concern involves the timing chains. Over time, the tensioners can wear, leading to rattling noises and potential timing issues. Using a high-quality synthetic oil with robust detergent packages can help keep the timing chain system clean and lubricated, potentially mitigating some of the wear that leads to chain stretch. Another common issue is with the rear differential, where fluid breakdown can lead to premature wear of the gears, especially in older units. Regular fluid changes with a premium synthetic gear lube can significantly extend the life of the differential components.
Transmission shudder is another complaint that has been noted in this model year. This can be caused by fluid breakdown or buildup of varnish in the torque converter. Switching to a synthetic transmission fluid designed for severe service can help clean the system and restore smooth shifting characteristics. Additionally, cooling system leaks and coolant degradation can be problematic as the vehicle ages. A high-performance antifreeze with extended service life can provide better corrosion protection and heat transfer, ensuring the engine does not overheat during heavy loads.
Despite these potential issues, the 2007 Ford Explorer with the 4.6L V8 remains a popular choice for families and outdoor enthusiasts. Its reputation for durability, when properly maintained with premium lubricants, ensures that it can continue to serve its owners well. By focusing on the correct fluids and maintaining a strict service schedule, owners can keep their Explorer running smoothly for many more miles. The combination of a powerful V8 engine and a reliable transmission makes it a worthy investment for those who need a versatile and capable SUV.