2020 Ford Explorer St AWD – The Definitive Guide To Performance

ByRobert Lozano

The 2020 Ford Explorer ST AWD combines a high-output twin-turbo V6 with a performance-tuned chassis to redefine the family hauler. This guide provides the technical depth and practical steps needed to maintain its complex systems, troubleshoot common first-year glitches, and unlock its full potential.

You likely chose this vehicle because you wanted a three-row SUV that didn’t feel like a compromise. When you get behind the wheel of a 2020 ford explorer st awd, you immediately notice the rear-biased power delivery and the aggressive surge of the 3.0L EcoBoost engine.

We agree that owning a high-performance machine requires a more proactive approach than your average commuter car. This article promises to break down exactly what you need to watch for, from specific fluid requirements to the most effective performance upgrades available today.

We will preview the essential maintenance schedules, common mechanical “gremlins,” and the tools you need to handle repairs in your own garage. Whether you are a weekend warrior or a dedicated DIYer, this guide is your roadmap to long-term reliability and speed.

Understanding the 3.0L EcoBoost and CD6 Platform

The 2020 model year marked a massive shift for the Explorer, moving to the CD6 platform. This change returned the vehicle to a longitudinal engine layout, which significantly improved weight distribution and towing dynamics.

At the heart of this beast is the 3.0-liter twin-turbocharged EcoBoost V6, pushing out 400 horsepower and 415 lb-ft of torque. Unlike the standard trims, the ST uses a performance-tuned Intelligent All-Wheel Drive system that prioritizes the rear wheels for a sportier feel.

This powertrain is mated to the 10R80 10-speed automatic transmission. While this gearbox is designed for rapid shifts, it is a complex piece of machinery that requires clean fluid and occasional software updates to remain smooth during daily driving.

The Role of the Power Transfer Unit (PTU)

The PTU is the component that sends power from the transmission to the front wheels. In many Ford AWD vehicles, this part is often overlooked because it is considered “sealed for life” by the factory.

However, experienced technicians know that the PTU lives in a high-heat environment right next to the exhaust. To prevent the gear oil from turning into sludge, we recommend changing this fluid every 30,000 miles to ensure the longevity of your drivetrain.

Essential Maintenance Schedule for the 2020 ford explorer st awd

To keep your SUV performing at its peak, you cannot simply follow the basic “oil change when the light comes on” philosophy. High-performance turbocharged engines are harder on their lubricants and cooling systems than naturally aspirated alternatives.

For the 2020 ford explorer st awd, we suggest a 5,000-mile oil change interval using a high-quality full synthetic 5W-30 oil. This protects the turbocharger bearings from heat-soak and prevents carbon buildup on the intake valves, a common issue in direct-injection engines.

Check your engine air filters every 10,000 miles. Because the ST uses two turbos, it breathes a lot of air; a clogged filter will not only sap your horsepower but also decrease your fuel efficiency significantly during highway cruising.

Critical Fluid Capacities and Specs

  • Engine Oil: 6.0 Quarts of 5W-30 Full Synthetic (must meet Ford WSS-M2C946-B1).
  • Coolant: Motorcraft Orange or Yellow (check your specific build date for compatibility).
  • Brake Fluid: DOT 4 LV (Low Viscosity) is required for the advanced ABS and traction control systems.
  • Rear Differential: 75W-85 Synthetic Gear Lubricant.

Tire and Brake Care

If your ST is equipped with the Street Pack or Track Pack, you have larger upgraded brakes. These performance pads create more dust and wear faster than standard pads, so inspect your rotor thickness every time you rotate your tires.

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Tire rotation is vital for the AWD system. If the tread depth varies significantly between the front and rear axles, it can put unnecessary strain on the center clutch pack within the transfer case. Aim for a rotation every 5,000 to 7,500 miles.

Common Issues and How to Fix Them

As the first year of a new generation, the 2020 model has a few known quirks. Being aware of these can save you a lot of frustration and potentially expensive repair bills down the road if caught early.

One of the most reported issues involves the 10-speed transmission. Some owners experience harsh shifts or “clunking” when downshifting from 3rd to 2nd gear. Often, this is a software issue that can be resolved with a PCM (Powertrain Control Module) re-flash at the dealership.

The infotainment system, specifically the 10.1-inch vertical screen, is known for occasional freezing or backup camera glitches. Before replacing hardware, try a “soft reset” by holding the Volume Down and Seek Right buttons on the steering wheel simultaneously.

The Rear Subframe Bolt Issue

A specific concern for the 2020 model year is the single-bolt rear subframe mounting. Under heavy acceleration or towing, this bolt can sometimes shear, leading to a loud “bang” from the rear of the vehicle.

Aftermarket companies now offer subframe lockout kits or dual-bolt mounting brackets. If you plan on launching your ST or taking it to the drag strip, this is a safety-critical upgrade that provides peace of mind and improves rear-end stability.

Intercooler Condensation

In humid climates, the factory intercooler can sometimes accumulate moisture. Under heavy throttle, this moisture can be sucked into the engine, causing a momentary misfire. Upgrading to a high-performance aftermarket intercooler usually solves this while also lowering intake air temperatures.

Top Performance Mods for the Enthusiast

The 2020 ford explorer st awd is a fantastic canvas for modifications. Because it shares much of its engine architecture with the Lincoln Aviator and even some components with the Raptor, the aftermarket support is massive.

The most effective “bang-for-your-buck” modification is a custom ECU tune. A reputable tuner can safely increase the boost levels and optimize timing to push the ST from 400 horsepower to nearly 500 horsepower on 93-octane fuel.

When you increase power, you must also manage heat. A larger front-mount intercooler (FMIC) is essential for consistent performance. The stock unit is prone to heat soak, meaning your power will drop off after just one or two hard pulls on a warm day.

Suspension and Handling Upgrades

While the ST is “sport-tuned,” it still sits quite high for a performance SUV. Installing a set of lowering springs (such as those from H&R or Steeda) drops the center of gravity and significantly reduces body roll in the corners.

Upgrading the rear sway bar is another “pro tip” for better handling. A stiffer rear bar helps the vehicle rotate more effectively, making it feel more like a sports sedan and less like a top-heavy utility vehicle on twisty backroads.

Exhaust and Sound

The stock exhaust is surprisingly quiet for a vehicle with an ST badge. A cat-back exhaust system will give the V6 a deeper, more aggressive growl without creating annoying “drone” inside the cabin during long highway trips with the family.

Tools and Resources for the DIY Mechanic

Working on a modern, computer-controlled SUV requires more than just a set of wrenches. To truly master the 2020 ford explorer st awd, you should invest in a few specialized tools that will make your life much easier.

A quality OBD2 scanner is mandatory. For Ford owners, we highly recommend using FORScan software with a compatible adapter. This allows you to read deep-level manufacturer codes, perform battery registrations, and even toggle hidden features like “Bambi mode” (high beams and fog lights on simultaneously).

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Because many of the suspension and drivetrain bolts are “torque-to-yield” (one-time use), you will need a reliable torque wrench. Always consult a service manual for the exact foot-pound specifications to avoid stripping threads in the aluminum components.

Essential Shop Supplies

  • Trim Removal Tools: Essential for accessing interior fuses or fixing rattles without scratching the plastic.
  • Fluid Extractor: Makes changing the differential and PTU fluids much cleaner and faster.
  • Magnetic Socket Trays: The engine bay is cramped; losing a bolt down by the turbos can lead to hours of frustration.
  • Jack Stands and Floor Jack: Never work under the vehicle supported only by a jack; the Explorer ST is heavy and requires stable support.

Off-Road and Towing Capabilities

While the ST is street-focused, its all-wheel-drive system is surprisingly capable in light off-road conditions. If you find yourself on a forest service road or a sandy beach, use the Deep Snow/Sand drive mode to recalibrate the traction control.

The 2020 Explorer ST comes standard with a Class IV trailer hitch and can tow up to 5,600 pounds. When towing, always engage Tow/Haul mode. This changes the shift points to keep the engine in its powerband and provides engine braking to save your pads on long descents.

If you plan on frequent towing, consider installing a catch can on the PCV (Positive Crankcase Ventilation) system. This prevents oil vapors from being recirculated into the intake, keeping your intercooler and valves cleaner over thousands of miles of heavy-load driving.

Frequently Asked Questions About the 2020 Ford Explorer ST AWD

Is the 2020 ford explorer st awd reliable?

Generally, yes. While it had some first-year teething issues related to transmission software and interior electronics, the core 3.0L EcoBoost engine is very robust. Regular maintenance and addressing TSBs (Technical Service Bulletins) are the keys to long-term reliability.

What is the best fuel to use in an Explorer ST?

While it can run on 87-octane, Ford recommends 91-octane or higher for maximum performance. Using premium fuel prevents the engine from pulling back timing due to knock, especially in hot weather or when towing heavy loads.

Can I change the PTU fluid myself?

Yes, but it is a tight squeeze. You will need a fluid extraction pump to suck the old oil out of the fill hole, as there is no dedicated drain plug on most units. It is a messy job but highly rewarding for the health of the drivetrain.

Does the 2020 Explorer ST have a spare tire?

Most models come with a temporary “donut” spare tire located under the rear cargo floor. However, if you have upgraded to very large aftermarket wheels, ensure your spare is still compatible with the overall rolling diameter to avoid damaging the AWD system.

Final Thoughts for the Owner-Mechanic

Owning a 2020 ford explorer st awd is a rewarding experience for anyone who appreciates a vehicle that can do it all. By staying ahead of the maintenance curve and understanding the unique needs of the CD6 platform, you ensure that your SUV remains a high-performance asset rather than a liability.

Remember that safety should always be your first priority. If you encounter a mechanical issue that feels beyond your skill level—especially involving the high-pressure fuel system or internal transmission components—do not hesitate to consult a certified master technician.

Take pride in your machine, keep your fluids fresh, and don’t be afraid to utilize the incredible power this SUV offers. Stay safe, keep your hands greasy, and enjoy the drive!

Robert Lozano
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