🔧 Insight - CVT Transmission Fluid Drain & Refill

On your Insight, CVT fluid is a maintenance item that protects the belt/pulleys inside the transmission and helps prevent shuddering or slipping. This is typically a drain-and-refill (not a “flush”), and it’s important to use the correct Honda CVT fluid.

Difficulty Level: Intermediate | Estimated Time: 1.0-2.0 hours

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⚠️ Safety & Precautions

• 🛑 Work on a level surface and support the car with jack stands—never rely on a jack alone.
• 🔥 CVT fluid can be hot. Let the car cool if you just drove it.
• 🔌 Keep the car OFF (not in READY mode) and keep the key/fob away from the car while you’re underneath.
• 🧼 Clean around plugs before opening the transmission to avoid dirt contamination.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Wheel chocks
• Safety glasses
• Nitrile gloves
• 10mm socket
• 3/8" drive ratchet
• 17mm socket
• Torque wrench (10–100 ft-lbs range)
• Drain pan (at least 8-quart)
• Fluid measuring container (marked in quarts/liters)
• Long-neck funnel
• Flat trim clip tool
• Shop rags

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Honda CVT fluid (HCF-2) - Qty: 4 quarts
• Transmission drain plug crush washer - Qty: 1
• Transmission fill plug crush washer - Qty: 1

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📋 Before You Begin

• Park on level ground, apply the parking brake, and place wheel chocks behind the rear wheels.
• Warm the CVT fluid with a 10–15 minute drive, then shut the car OFF and let it sit 5–10 minutes.
• Lift the front of the car with a floor jack and support it securely on jack stands.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the lower splash shield (undercover)

• Use a 10mm socket to remove the bolts.
• Use a flat trim clip tool to pop out any plastic clips.
• Set the shield and hardware aside in a safe spot.

Step 2: Locate the CVT fill plug and loosen it first

• Find the CVT fill plug on the transmission case (you want to confirm it will open before you drain).
• Use a 17mm socket and 3/8" drive ratchet to break it loose, then snug it back by hand for now.
• Tip: If the fill plug won’t loosen, stop here.

Step 3: Drain the old CVT fluid

• Position your drain pan under the CVT drain plug.
• Use a 3/8" drive ratchet or a 17mm socket (depending on plug style) to remove the drain plug.
• Let it drain until it slows to an occasional drip.

Step 4: Measure what came out (so you refill correctly)

• Carefully pour the drained fluid into a fluid measuring container.
• Write down the amount—this is your target refill amount.
• Tip: This avoids over/under-filling.

Step 5: Reinstall the drain plug with a new crush washer

• Remove the old crush washer from the drain plug and install the new one.
• Thread the drain plug in by hand to avoid cross-threading.
• Use a torque wrench with the correct socket/drive to tighten the drain plug: Torque to 49 Nm (36 ft-lbs).
• Wipe the area clean with shop rags.

Step 6: Refill with Honda HCF-2 CVT fluid

• Remove the fill plug fully using a 17mm socket and 3/8" drive ratchet.
• Install a long-neck funnel into the fill opening.
• Pour in Honda HCF-2 slowly until you’ve added the same amount you measured.

Step 7: Reinstall the fill plug with a new crush washer

• Install the new crush washer on the fill plug.
• Thread the fill plug in by hand first.
• Use a torque wrench to tighten: Torque to 44 Nm (33 ft-lbs).
• Wipe the area clean with shop rags.

Step 8: Reinstall the splash shield

• Refit the undercover and clips.
• Use a 10mm socket to tighten the bolts snugly (do not overtighten plastic mounts).

Step 9: Lower the car

• Use the floor jack to lift slightly, remove the jack stands, then lower the car carefully.

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✅ After Repair

• Start the car and, with your foot on the brake, slowly move the shifter through P-R-N-D and back to P.
• Let it idle 2–3 minutes, then shut it off and check underneath for any leaks.
• Test drive 10 minutes, then re-check for leaks around the fill and drain plugs.
• If you have a maintenance reminder on the dash, tell me and I’ll walk you through resetting it for your Insight.

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💰 DIY vs Shop Cost

Shop Cost: $220-$380 (parts + labor)

DIY Cost: $45-$90 (parts only)

You Save: $130-$320 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-1.5 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.