🔧 Transmission Fluid Change - Drain and Refill

This service replaces the old automatic transmission fluid with fresh fluid and restores proper shifting quality. On your Explorer, this is a drain-and-refill service with a level check at the transmission fill/check port, not a dipstick service.

Difficulty Level: Intermediate | Estimated Time: 1.5-2.5 hours

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⚠️ Safety & Precautions

• Work only with the transmission fluid warm, not scorching hot.
• Support the vehicle securely on jack stands before going underneath.
• Keep dirt out of the transmission. Clean the area around the fill and drain plugs first.
• Do not overfill. The fluid level must be set at the correct temperature.
• Use only the specified automatic transmission fluid for this transmission.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Safety glasses
• Nitrile gloves
• 3/8-inch drive ratchet
• Metric socket set
• Drain pan
• Fluid transfer pump (specialty)
• Torque wrench
• Scan tool or temperature-reading scan app (specialty)
• Shop towels
• Brake cleaner

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Automatic transmission fluid meeting MERCON LV specification - Qty: 6-8 quarts
• Transmission drain plug washer - Qty: 1
• Transmission fill plug washer - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Chock the rear wheels before lifting the vehicle.
• Warm the transmission with a short drive so the fluid drains more completely.
• Have the scan tool ready to read transmission fluid temperature.
• Cleanliness matters here.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Raise and secure the vehicle

• Use the floor jack to raise the vehicle at the proper lift points.
• Support it with jack stands on level ground.
• Leave the vehicle level as possible for an accurate fluid level check.

Step 2: Locate the transmission drain and fill points

• Use a light and your eyes to find the transmission drain plug and fill/check plug.
• Clean both areas with brake cleaner and shop towels before loosening anything.

Step 3: Drain the old fluid

• Place the drain pan under the transmission.
• Use the metric socket set and 3/8-inch drive ratchet to remove the drain plug.
• Let the fluid drain fully.
• Install a new drain plug washer if equipped.
• Torque to OEM specification.

Step 4: Reinstall the drain plug

• Clean the plug and mating surface.
• Reinstall the drain plug by hand first, then snug it with the torque wrench.
• Torque to OEM specification.

Step 5: Refill with fresh fluid

• Remove the fill/check plug using the metric socket set and 3/8-inch drive ratchet.
• Use the fluid transfer pump to pump in the correct automatic transmission fluid meeting MERCON LV specification.
• Fill until fluid begins to reach the proper level check point.
• Install a new fill plug washer if equipped.
• Torque to OEM specification.

Step 6: Set the fluid level at the correct temperature

• Start the engine and keep the vehicle safely supported.
• Use the scan tool or temperature-reading scan app to monitor transmission fluid temperature.
• Shift slowly through all gear positions, pausing a few seconds in each one.
• Return the shifter to Park.
• With the fluid at the specified operating temperature, check the fill/check port.
• Add fluid with the fluid transfer pump until a small stream or dribble comes from the port, then reinstall the plug.
• Torque to OEM specification.

Step 7: Recheck for leaks

• Use the shop towels to wipe the transmission clean.
• Inspect the drain plug, fill plug, and pan area for leaks.
• Lower the vehicle carefully.

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✅ After Repair

• Drive the vehicle and confirm normal shifting.
• Recheck for leaks after the test drive.
• If shifting feels abnormal, recheck fluid level at the correct temperature.
• Dispose of used transmission fluid properly.

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💰 DIY vs Shop Cost

Shop Cost: $220-$420 (parts + labor)

DIY Cost: $60-$140 (parts only)

You Save: $160-$280 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.5-2.5 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.