2017 Ford Explorer Transmission Fluid – The Ultimate DIY Guide

ByRobert Lozano

Keeping your 2017 Ford Explorer’s transmission healthy is crucial for its performance and lifespan. This comprehensive guide will walk you through everything you need to know about your transmission fluid, from checking levels to performing a fluid change, ensuring your SUV runs smoothly for years to come.

Whether you’re tackling daily commutes or embarking on rugged off-road adventures, your Ford Explorer’s transmission is the unsung hero, translating engine power into wheel motion. But like any hard worker, it needs proper care to perform at its best. Ignoring its needs, especially concerning its vital fluid, can lead to costly repairs and leave you stranded.

This article is your expert companion, promising to demystify the process of understanding and maintaining your 2017 Ford Explorer transmission fluid. We’ll equip you with the knowledge and confidence to perform essential checks and services, helping you extend your vehicle’s life and avoid common pitfalls.

By the end of this guide, you’ll know precisely what fluid your Explorer needs, when to service it, and how to safely perform the work yourself, saving you time and money while ensuring reliable performance on any journey.

Understanding Your 2017 Ford Explorer’s Transmission System

The transmission in your 2017 Ford Explorer is a sophisticated piece of engineering designed to deliver power efficiently. Proper maintenance, particularly of the transmission fluid, is key to its longevity.

The 6F50/6F55 Automatic Transmission

Most 2017 Ford Explorers are equipped with either the 6F50 or 6F55 six-speed automatic transmission. These transmissions are known for their robust design and smooth shifting capabilities.

They are electronically controlled, which means sensors monitor various parameters to ensure optimal performance. The right fluid is essential for these precise operations.

Why Transmission Fluid is Critical

Transmission fluid serves multiple vital roles within your Explorer’s gearbox. It acts as a lubricant, reducing friction between moving parts and preventing wear.

It also functions as a hydraulic fluid, transmitting power to engage clutches and bands for gear changes. Additionally, it cools the transmission, dissipating heat generated during operation.

Without proper fluid, your transmission can overheat, leading to accelerated wear and eventual failure. This is especially true for vehicles that tow or frequently drive in challenging conditions.

Common Symptoms of Low or Bad Fluid

Ignoring your transmission fluid can lead to noticeable symptoms. You might experience rough or delayed shifting, where the vehicle hesitates before engaging a gear.

A burning smell can indicate overheating fluid, which is a serious warning sign. You might also notice slipping gears, where the engine revs but the vehicle doesn’t accelerate as it should.

Any of these signs warrant an immediate check of your transmission fluid. Addressing these issues early can prevent more significant, costly repairs down the line.

Choosing the Right 2017 Ford Explorer Transmission Fluid

Selecting the correct transmission fluid is paramount for your Explorer’s health. Using the wrong type can cause serious damage and void your warranty.

Ford’s MERCON® LV Specification

For your 2017 Ford Explorer transmission fluid, Ford specifically recommends using MERCON® LV automatic transmission fluid. The “LV” stands for “Low Viscosity,” a characteristic crucial for modern, fuel-efficient transmissions.

This fluid is engineered to meet the precise requirements of your Explorer’s transmission, ensuring proper lubrication, cooling, and shifting performance. Do not use MERCON V or any other fluid that does not explicitly state MERCON LV compatibility.

How to Verify Fluid Type

Always double-check your owner’s manual for the definitive fluid specification. The manual provides the most accurate and up-to-date information for your specific model and trim.

You can also look for a label on the transmission dipstick or filler cap, which often specifies the required fluid type. When purchasing, ensure the product packaging clearly states MERCON LV compliance.

Quantity Requirements

The total capacity for your Explorer’s transmission can vary slightly, but a typical drain and fill will require around 5-7 quarts of MERCON LV. A full transmission overhaul or dry fill would require more, closer to 10-12 quarts.

Always have a little extra on hand to ensure you can top off as needed. It’s better to have too much than to run short in the middle of a service.

When to Check and Change Your Transmission Fluid

Regular checks and timely fluid changes are essential preventive maintenance. Knowing when and how to do this can significantly extend your transmission’s life.

Manufacturer’s Recommended Intervals

Ford typically recommends inspecting your transmission fluid every 30,000 miles or 2 years, whichever comes first. For a fluid change, the interval can be as long as 150,000 miles under normal driving conditions.

However, these are general guidelines. Your driving habits and environmental factors can necessitate more frequent service. Always consult your owner’s manual for the exact schedule.

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Factors Influencing Fluid Life (Towing, Off-roading, Heavy Use)

If you frequently tow trailers, carry heavy loads, or engage in off-road driving, your transmission works harder. This generates more heat and accelerates fluid degradation.

For off-road enthusiasts or those living in extreme climates, it’s wise to consider changing your transmission fluid more frequently, perhaps every 60,000 to 75,000 miles. This proactive approach prevents premature wear in challenging conditions.

How to Perform a Fluid Level Check (Warm vs. Cold)

Checking your transmission fluid level is a straightforward process, but it must be done correctly. The most accurate reading is typically achieved when the fluid is at operating temperature.

To check:

  1. Park your Explorer on a level surface.
  2. Start the engine and let it run for about 10-15 minutes to reach operating temperature.
  3. While the engine is running, shift through all gears (P, R, N, D, L) pausing briefly in each. Then return to Park.
  4. Locate the transmission dipstick, usually yellow or red, often near the firewall.
  5. Pull the dipstick out, wipe it clean with a lint-free cloth, reinsert it fully, and then pull it out again.
  6. Observe the fluid level. It should be between the “HOT” or “FULL” marks. If it’s below, add MERCON LV in small increments, rechecking frequently.

Some Explorers have a “sealed for life” transmission, meaning no traditional dipstick. In such cases, checking the level involves a specific procedure usually requiring a lift and scanning tool, best left to a professional if you’re not experienced.

Step-by-Step Guide: Changing Your 2017 Ford Explorer Transmission Fluid

Performing a transmission fluid drain and fill is a manageable DIY task for the careful mechanic. Always prioritize safety and have all your tools ready.

Essential Tools and Materials

Before you begin, gather the following:

  • New MERCON LV transmission fluid (6-8 quarts for a drain and fill).
  • Transmission filter and pan gasket (if replacing the filter).
  • Drain pan with at least 10-quart capacity.
  • Socket set (typically 10mm, 13mm, 1/2-inch for pan bolts).
  • Torque wrench.
  • Funnel.
  • Gloves and safety glasses.
  • Jack and jack stands or a vehicle lift.
  • Lint-free rags.
  • Brake cleaner or parts cleaner.

Safety First: Prepping for the Job

Safety is paramount when working under your vehicle. Always work on a level surface. Chock the rear wheels to prevent any movement.

Use a sturdy jack to lift the front of the vehicle, and then immediately secure it with robust jack stands. Never rely solely on a jack. Ensure the vehicle is stable before crawling underneath.

Draining the Old Fluid

Once the vehicle is safely supported:

  1. Locate the transmission fluid pan underneath the vehicle.
  2. Place your drain pan directly beneath the transmission pan.
  3. Carefully loosen the transmission pan bolts, starting from one end. Leave a few bolts finger-tight on the opposite side to control the flow.
  4. Slowly remove the remaining bolts. As you do, the pan will tilt, and fluid will begin to drain. Be prepared for a gush of warm fluid.
  5. Once most of the fluid has drained, remove all bolts and carefully lower the pan. There will still be some fluid inside, so keep it level.

Inspect the old fluid for excessive metal shavings or a strong burnt smell. A small amount of sludge on the pan magnet is normal, but large chunks indicate a potential internal issue.

Replacing the Transmission Filter

With the pan removed, you’ll see the transmission filter. It’s usually held in place by a few bolts or simply pressed into the valve body.

Carefully remove the old filter. Be aware that more fluid will likely drip out. Install the new filter, ensuring it seats properly. If your new filter came with an O-ring, make sure it’s in place.

Clean the transmission pan thoroughly, removing any old gasket material and cleaning the magnet. Reinstall the magnet in the clean pan.

Refilling and Leveling the Fluid

Install the clean transmission pan with a new gasket. Tighten the pan bolts evenly to the manufacturer’s specified torque (usually around 8-10 ft-lbs). Do not overtighten, as this can warp the pan or strip threads.

Lower the vehicle partially so it’s as level as possible, but still accessible for adding fluid. Locate the transmission fill tube (where the dipstick goes).

Using a clean funnel, slowly add 5-6 quarts of fresh MERCON LV. Start the engine and let it run for a few minutes. Shift through all gears, pausing in each, then return to Park.

Recheck the fluid level using the dipstick, following the “warm check” procedure. Add fluid in small increments (half a quart at a time) until the level is within the “HOT” range. Do not overfill.

Post-Service Checks and Test Drive

After reaching the correct fluid level, double-check all pan bolts for tightness. Look for any drips or leaks around the pan gasket. Clean any spilled fluid with brake cleaner.

Take your Explorer for a short test drive. Pay attention to shifting performance. Shifts should be smooth and consistent. After the drive, recheck the fluid level one last time and inspect for any new leaks.

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Pro Tips for Extending Your Transmission’s Life

Beyond fluid changes, several practices can help your Explorer’s transmission last longer and perform better.

Regular Inspections

Make it a habit to visually inspect your transmission regularly. Look for any signs of leaks, especially around the pan gasket, lines, and cooler.

A quick glance under the vehicle during oil changes can catch minor issues before they become major problems. Early detection of a small leak can save your transmission from running dry.

Driving Habits Matter

Your driving style significantly impacts transmission wear. Avoid sudden, harsh acceleration and braking, which put stress on the transmission components.

Allow your vehicle to warm up slightly before driving aggressively, especially in cold weather. When towing, use the appropriate tow/haul mode if your Explorer is equipped with it, as this optimizes shift points and reduces transmission strain.

When to Seek Professional Help

While many fluid-related tasks are DIY-friendly, some issues require expert attention. If you notice persistent warning lights, unusual noises, or severe shifting problems after a fluid change, it’s time to call a professional.

Complex diagnostics, internal transmission repairs, or a full transmission flush (which differs from a simple drain and fill) are best left to a certified mechanic. They have the specialized tools and knowledge to correctly diagnose and repair intricate transmission issues.

Troubleshooting Common Transmission Fluid Issues

Even with proper maintenance, you might encounter transmission issues. Knowing what to look for can help you decide your next steps.

Overheating Transmission

An overheating transmission is a serious problem. Symptoms include a burning smell, delayed shifts, or a transmission warning light. This often points to low fluid, old degraded fluid, or a clogged transmission cooler.

Check your fluid level immediately. If the fluid looks dark and smells burnt, a fluid change is overdue. If the problem persists, inspect the transmission cooler lines for kinks or damage, and consider a professional diagnosis.

Shifting Problems

Rough, delayed, or erratic shifts can be caused by incorrect fluid levels, contaminated fluid, or internal solenoid issues. Sometimes, a fresh fluid change can resolve minor shifting quirks.

However, if the problem continues, or if you experience “limp mode” (where the transmission locks into a single gear), it’s crucial to have a professional diagnose the issue. It could be an electronic problem or a mechanical fault requiring expert repair.

Leaks and Puddles

Finding red or brownish-red puddles under your Explorer is a clear sign of a transmission fluid leak. Common leak points include the pan gasket, transmission cooler lines, front or rear seals, or the shift shaft seal.

Address leaks promptly. A minor leak can quickly become a major fluid loss, leading to catastrophic transmission failure. For simple pan gasket leaks, a DIY replacement might suffice. More complex leaks, especially from seals, usually require professional expertise.

Frequently Asked Questions About 2017 Ford Explorer Transmission Fluid

Here are some common questions we hear from Explorer owners about their transmission fluid.

How often should I change my 2017 Ford Explorer transmission fluid?

Under normal driving conditions, Ford recommends a fluid change around 150,000 miles. However, if you tow, drive aggressively, or frequently off-road, consider changing it every 60,000 to 75,000 miles to protect your transmission.

Can I use a generic transmission fluid?

No, it’s crucial to use only MERCON® LV fluid for your 2017 Ford Explorer. Generic or “multi-vehicle” fluids that don’t explicitly state MERCON LV compatibility can cause damage and void your warranty. Always stick to the manufacturer’s specification.

What are the signs of a failing transmission?

Signs of a failing transmission include grinding or clunking noises, a burning smell, slipping gears, delayed engagement, or the vehicle refusing to move. Any of these symptoms warrant immediate professional inspection.

Is a transmission flush better than a drain and fill?

A transmission flush involves using a machine to force all old fluid out of the system, including the torque converter. A drain and fill only replaces the fluid in the pan. While a flush removes more old fluid, it can sometimes dislodge debris in older, poorly maintained transmissions, potentially causing issues. For most DIYers, a drain and fill is a safer and effective maintenance method, especially if done regularly. Consult a professional for advice on flushing.

Maintaining your 2017 Ford Explorer transmission fluid is one of the most critical steps you can take to ensure your vehicle’s reliability and extend its life. By understanding the right fluid to use, following recommended service intervals, and performing careful DIY checks and changes, you empower yourself to keep your Explorer running smoothly.

Remember, attention to detail and a commitment to safety are your best tools. Whether you’re hitting the trails or cruising the highway, a well-maintained transmission ensures your adventures are always on track. Stay vigilant, stay informed, and enjoy the journey!

Robert Lozano
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