2017 Ford Explorer Transmission Fluid Capacity
Knowing the correct 2017 ford explorer transmission fluid capacity is the first step toward preventing gear slippage and extending the life of your SUV. Depending on whether you have the 2.3L EcoBoost or the 3.5L engine, your total fill capacity will range between 9.0 and 11.6 quarts of MERCON LV fluid. This guide provides the exact measurements and professional steps needed to ensure your transmission remains healthy for years to come.
Maintaining a modern SUV like the 2017 Ford Explorer requires more than just regular oil changes. Many owners overlook the transmission system until they notice a hesitation in shifting or a strange noise coming from under the floorboards.
In this guide, I will show you how to accurately manage your fluid levels and identify which transmission model is sitting under your hood. You will learn the difference between a total system fill and a standard service refill to avoid overfilling your gearbox.
By the end of this article, you will have the confidence to check, drain, and refill your transmission fluid using professional-grade techniques. Let’s dive into the technical details and get your Explorer back into peak performing shape.
Understanding the 2017 ford explorer transmission fluid capacity
The 2017 ford explorer transmission fluid capacity varies significantly based on the specific transmission model installed in your vehicle. Ford utilized two primary 6-speed automatic transmissions for this model year: the 6F35 and the 6F50/6F55 versions.
For those driving the 2.3L EcoBoost engine, you likely have the 6F35 transmission, which has a total capacity of approximately 9.0 quarts (8.5 liters). This is the total volume including the torque converter and cooling lines.
If your Explorer features the 3.5L Ti-VCT or the 3.5L EcoBoost V6, you are equipped with the beefier 6F50 or 6F55 transmission. These units require a larger volume, with a total 2017 ford explorer transmission fluid capacity of 11.0 to 11.6 quarts (10.4 to 11.0 liters).
It is vital to understand that a “service fill” is different from a “dry fill.” When you perform a standard drain and fill by removing the drain plug, you will typically only remove about 4 to 6 quarts of fluid. Never pour the full 11 quarts into the vehicle after a simple drain, as this will lead to severe overfilling.
Service Fill vs. Total Capacity
A service fill only replaces the fluid held in the transmission pan and the main case. Much of the fluid remains trapped inside the torque converter and the transmission cooler during a standard DIY job.
Always measure the amount of old fluid you drain out of the system. This gives you a baseline for how much fresh MERCON LV you need to add back in to reach the proper level.
Identifying Your Specific Transmission Model
Before buying your supplies, you must confirm which transmission your Explorer uses. While engine size is a great indicator, checking the Safety Compliance Certification Label on the driver’s side door jamb is the foolproof method.
Look for the word “TR” (Transmission) followed by a letter or number code. A code “W” typically indicates the 6F35, while other codes may point to the 6F50 or 6F55 heavy-duty variants.
The 6F35 is generally found in front-wheel-drive (FWD) or light-duty intelligent four-wheel-drive (4WD) setups. The 6F50 and 6F55 are designed to handle the higher torque output of the V6 engines, especially the twin-turbo EcoBoost variant.
Knowing your model ensures you don’t just get the 2017 ford explorer transmission fluid capacity right, but also that you understand the internal architecture of your gearbox. Different models may have slightly different filter locations or drain plug access points.
The Essential Fluid: Why MERCON LV Matters
Ford is very specific about the lubricant used in these 6-speed units. The 2017 Explorer requires MERCON LV (Low Viscosity) automatic transmission fluid. Using the wrong fluid can lead to seal failure and improper clutch engagement.
MERCON LV is designed to provide excellent thermal stability and oxidation resistance. This is crucial for the Explorer, which often operates in high-heat environments like stop-and-go traffic or while towing a trailer.
Avoid using “universal” fluids unless they explicitly state they meet the WSS-M2C938-A specification. Using a high-viscosity fluid in a system designed for low-viscosity can cause sluggish shifting and reduced fuel economy.
If you find that your fluid is dark brown or smells like burnt toast, it is time for a change. Fresh fluid should be a translucent red color, allowing you to see through it easily when held up to the light.
Tools and Materials Needed for the Job
To successfully manage your 2017 ford explorer transmission fluid capacity during a service, you need the right tools. Having everything ready prevents the frustration of being stuck under the car with a draining transmission.
- Ratchet and Socket Set: You will typically need an 11mm or 8mm socket for the air box and a larger socket or wrench for the drain plug.
- Long-Neck Funnel: The fill port is located deep in the engine bay, so a long, flexible funnel is a lifesaver.
- Drain Pan: Ensure it can hold at least 7-8 quarts to avoid spills on your garage floor.
- Torque Wrench: Essential for tightening the drain plug to the factory spec (usually around 9-12 lb-ft).
- Latex or Nitrile Gloves: Transmission fluid is a detergent and can be harsh on your skin.
I also recommend keeping several shop rags nearby. Transmission fluid is notoriously messy and can be slippery if it gets on your tools or the garage floor.
Step-by-Step Guide to Changing Transmission Fluid
Performing a fluid refresh is one of the best ways to ensure your 2017 ford explorer transmission fluid capacity remains at the optimal level for performance. Follow these steps carefully to avoid common DIY pitfalls.
Step 1: Warm Up the Vehicle
Drive your Explorer for about 10-15 minutes to bring the transmission up to operating temperature. Warm fluid flows more easily and carries more contaminants out of the system when drained.
Step 2: Access the Drain Plug
Park the vehicle on a level surface and engage the parking brake. Locate the drain plug on the bottom of the transmission case; you may need to remove a plastic splash shield to get a clear view.
Step 3: Drain the Fluid
Place your drain pan under the plug and slowly loosen it. Let the fluid drain completely until it slows to a very thin drip. Take this time to inspect the magnetic drain plug for excessive metal shavings.
A small amount of fine “fuzz” is normal wear, but large metal flakes indicate internal damage. Once drained, reinstall the plug and tighten it to the recommended torque setting.
Step 4: Refill the System
Locate the transmission dipstick/fill cap under the hood. In the 2017 Explorer, this is often tucked under the air intake tube. You may need to loosen the intake clamps and move the tube aside.
Insert your long funnel and add about 4 quarts of MERCON LV. Since you are performing a service fill, you won’t reach the full 2017 ford explorer transmission fluid capacity of 11 quarts immediately.
Step 5: Check and Adjust
Start the engine and run the gear selector through each position (P, R, N, D, S), holding each for 3 seconds. With the engine still running and the vehicle in Park, check the dipstick level.
Add fluid in small increments (half-pints) until the level sits within the crosshatched area on the dipstick. Be patient, as overfilling is much harder to fix than underfilling.
Common Signs of Low Transmission Fluid
If you don’t keep an eye on your 2017 ford explorer transmission fluid capacity, you might experience several warning signs. Modern transmissions are highly sensitive to fluid pressure, and even being one quart low can cause issues.
One of the most common symptoms is delayed engagement. If you shift from Park to Drive and there is a noticeable 2-second pause before the vehicle moves, your fluid level is likely low.
You might also notice harsh shifting or “hunting” for gears. This happens when the transmission control module (TCM) struggles to maintain the correct hydraulic pressure to engage the clutch packs smoothly.
If you hear a whining noise that increases with engine RPM, the transmission pump may be sucking in air due to a low fluid level. This can lead to cavitation and permanent pump damage if not addressed immediately.
Pro Tips for Off-Roaders and Heavy Towers
For those who use their Explorer for more than just grocery runs, your fluid maintenance schedule should be more aggressive. Off-roading and towing generate significantly more heat within the gearbox.
Heat is the number one killer of automatic transmissions. If you frequently pull a boat or traverse steep trails, consider installing an auxiliary transmission cooler to help manage temperatures.
In these “severe duty” scenarios, I recommend changing your fluid every 30,000 to 50,000 miles. While the owner’s manual might suggest a longer interval, fresh fluid is cheap insurance against a $4,000 transmission rebuild.
Always check your 2017 ford explorer transmission fluid capacity after a particularly grueling trip. High heat can sometimes cause fluid to vent out of the overflow if the system gets too hot, leading to a low-level condition.
Why You Should Never Use a Flush Machine
There is a big debate between a “drain and fill” and a “machine flush.” For a 2017 Explorer, most experienced technicians recommend the drain and fill method over a pressurized flush.
Flush machines can sometimes force sediment and debris into the small passages of the valve body. This can lead to stuck valves and shifting problems that weren’t there before the service.
By performing multiple drain and fills over a few weeks, you can safely replace the majority of the fluid without the risks associated with high-pressure flushing. This gradual approach is much safer for high-mileage vehicles.
If you choose to do a second drain and fill, drive the car for a few hundred miles in between. This allows the new detergents in the fresh fluid to circulate and safely suspend any contaminants before the next drain.
Frequently Asked Questions About 2017 ford explorer transmission fluid capacity
How often should I check the transmission fluid in my 2017 Explorer?
You should check the fluid level at every oil change. While the system is technically “sealed,” leaks can develop at the axle seals or the cooler lines. Catching a low-level condition early can prevent catastrophic gear failure.
Can I use MERCON V instead of MERCON LV?
No, you cannot. MERCON V and MERCON LV have different viscosity ratings and chemical compositions. Using MERCON V in a 2017 Explorer can lead to improper shifting and may damage the internal components of the 6-speed transmission.
Is there a transmission fluid filter that needs to be replaced?
On the 6F35 and 6F50/55 transmissions, the main filter is located deep inside the case. It is generally not serviceable without disassembling the transmission. This makes regular fluid refreshes even more important, as the filter is meant to last the life of the unit.
What should I do if I overfill the transmission?
If you exceed the 2017 ford explorer transmission fluid capacity, you must remove the excess. Overfilling causes the fluid to foam, which leads to overheating and poor lubrication. You can use a small suction pump through the dipstick tube to draw out the extra fluid.
Why is the dipstick so hard to find?
Ford designed the 2017 Explorer engine bay to be compact. The dipstick is often a short handle located low on the transmission case, hidden under the air cleaner assembly. You may need a flashlight and a bit of reaching to find it.
Conclusion: Keeping Your Explorer Shifting Smoothly
Taking the time to understand your 2017 ford explorer transmission fluid capacity is an essential part of being a responsible owner. Whether you are a weekend DIYer or an off-road enthusiast, maintaining the correct level of MERCON LV is the key to longevity.
Remember that precision is more important than speed. Always check your levels while the engine is running and the fluid is warm to get an accurate reading. Avoid the temptation of “universal” fluids and stick to the OEM specifications for the best results.
By following the steps outlined in this guide, you can save hundreds of dollars in shop labor and gain the peace of mind that comes with knowing the job was done right. Keep your tools clean, your fluid fresh, and your Explorer will be ready for the road ahead. Stay safe and stay on the road!
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